This document provides an overview of historic bridges in Virginia, with a focus on metal truss bridges. It describes the typical parts of truss bridges and different truss configurations. It highlights several specific historic truss bridges in Virginia that showcase unique designs, including Phoenix columns, Lane trusses, and Thacher trusses. The document also discusses other bridge types like arch bridges, with examples of Luten and rainbow arch bridges. It provides background on bridge building companies and engineers. In addition, it shares the author's experience restoring historic metal truss bridges.
The presentation discussed efforts to preserve historic bridges in Virginia. It highlighted specific bridges in need of repair, including the Waterloo Bridge between Fauquier and Culpeper counties. It explained that over 90% of historic metal truss bridges and 75% of masonry and concrete arch bridges surveyed decades ago have been lost, often due to lack of maintenance and repair or being disregarded as typical examples of their time. It provided recommendations for how citizens can help preserve bridges, such as advocating for their inclusion in local comprehensive plans, documenting bridges, and donating to advocacy organizations.
This document discusses the importance of understanding historical significance when planning projects involving metal truss bridges. It provides examples of case studies where properly assessing a bridge's significance helped define the project outcome. Understanding what makes a bridge significant can help analyze prudent and feasible alternatives to avoid or minimize harm. The level of significance may also determine how much effort is deserved to preserve a bridge. Clear statements of significance educate decision makers and the public. Assessing bridges on a case by case basis can help identify those most worthy of preservation efforts to remain in service or find alternative uses.
Bridge Asset Management System and Practices at Small Bridges ConferenceAshish Shah
The document discusses the development of a Bridge Management System for Logan City Council in Australia. It provides background on Logan City Council's bridge assets, which increased significantly after an amalgamation that added rural areas with 19 timber bridges. It outlines the need for a Bridge Management System to effectively manage the bridges over their lifecycles. It also discusses inspections that were conducted, load limits that were put in place for bridges, community impacts, the design and replacement of the Edwards Bridge, and funding received through the Roads Alliance to improve bridge asset management.
Public Meeting #2 Presentation - November 11, 2014Thomas Downs
STATUS UPDATES
The 2nd of 4 public meetings have been held. To date, the project team and the public have reviewed the existing data, ideas, and potential options for creating a multi-modal transportation corridor. Please review the presentations for more detailed information on concepts considered for the corridor.
http://louisvilleky.gov/government/advanced-planning/lexington-road-corridor-transportation-plan
The document proposes developing a multi-use recreational trail from Kingston to the Ashokan Reservoir that would connect the city to open spaces, increase tourism, promote healthy lifestyles, and expand transportation alternatives. It discusses the project vision and goals, background history of the rail corridor, potential linkages to other trails, sections of the proposed trail, steps to address issues in developing the trail, and potential partners to help realize the project.
Final recommendations Thinkbike Workshop DCNLandUSA
The document summarizes presentations and discussions from a ThinkBike workshop in Washington DC focused on improving bicycling infrastructure. Teams proposed designs for bike lanes and cycle tracks on M Street, L Street, I Street, 4th Street and P Street. Recommendations included continuous bi-directional separated bikeways, unique intersection treatments, and connecting to the regional trail network. Outreach, education and enforcement strategies were also discussed to promote bicycling in the city.
Elm Street at Dolley Madison Boulevard Pedestrian ImprovementsFairfax County
This document provides details about pedestrian improvement projects completed at Elm Street and Dolley Madison Boulevard in Fairfax County, VA. The project included construction of brick walkways, curb ramps, handrails, signs, and pavement markings. A project team led by the Department of Transportation and Utilities Design and Construction Division completed the work, which was finished in July 2016. Before and after photos show the upgrades to the brick walkway. Contact information is provided for additional details.
The Ashtabula Bridge disaster occurred on December 29, 1876 when a railroad bridge collapsed as a train was passing over it. 92 people died, including passengers and crew, when the train plunged into the icy Ashtabula River below. An investigation found that the bridge had been improperly designed and inadequately inspected over its 11 years of use. The bridge's designer, Amasa Stone, had adapted an established wooden truss design for an iron bridge without approval from an engineer. The design flaws ultimately led to the bridge's failure under standard train loads.
The presentation discussed efforts to preserve historic bridges in Virginia. It highlighted specific bridges in need of repair, including the Waterloo Bridge between Fauquier and Culpeper counties. It explained that over 90% of historic metal truss bridges and 75% of masonry and concrete arch bridges surveyed decades ago have been lost, often due to lack of maintenance and repair or being disregarded as typical examples of their time. It provided recommendations for how citizens can help preserve bridges, such as advocating for their inclusion in local comprehensive plans, documenting bridges, and donating to advocacy organizations.
This document discusses the importance of understanding historical significance when planning projects involving metal truss bridges. It provides examples of case studies where properly assessing a bridge's significance helped define the project outcome. Understanding what makes a bridge significant can help analyze prudent and feasible alternatives to avoid or minimize harm. The level of significance may also determine how much effort is deserved to preserve a bridge. Clear statements of significance educate decision makers and the public. Assessing bridges on a case by case basis can help identify those most worthy of preservation efforts to remain in service or find alternative uses.
Bridge Asset Management System and Practices at Small Bridges ConferenceAshish Shah
The document discusses the development of a Bridge Management System for Logan City Council in Australia. It provides background on Logan City Council's bridge assets, which increased significantly after an amalgamation that added rural areas with 19 timber bridges. It outlines the need for a Bridge Management System to effectively manage the bridges over their lifecycles. It also discusses inspections that were conducted, load limits that were put in place for bridges, community impacts, the design and replacement of the Edwards Bridge, and funding received through the Roads Alliance to improve bridge asset management.
Public Meeting #2 Presentation - November 11, 2014Thomas Downs
STATUS UPDATES
The 2nd of 4 public meetings have been held. To date, the project team and the public have reviewed the existing data, ideas, and potential options for creating a multi-modal transportation corridor. Please review the presentations for more detailed information on concepts considered for the corridor.
http://louisvilleky.gov/government/advanced-planning/lexington-road-corridor-transportation-plan
The document proposes developing a multi-use recreational trail from Kingston to the Ashokan Reservoir that would connect the city to open spaces, increase tourism, promote healthy lifestyles, and expand transportation alternatives. It discusses the project vision and goals, background history of the rail corridor, potential linkages to other trails, sections of the proposed trail, steps to address issues in developing the trail, and potential partners to help realize the project.
Final recommendations Thinkbike Workshop DCNLandUSA
The document summarizes presentations and discussions from a ThinkBike workshop in Washington DC focused on improving bicycling infrastructure. Teams proposed designs for bike lanes and cycle tracks on M Street, L Street, I Street, 4th Street and P Street. Recommendations included continuous bi-directional separated bikeways, unique intersection treatments, and connecting to the regional trail network. Outreach, education and enforcement strategies were also discussed to promote bicycling in the city.
Elm Street at Dolley Madison Boulevard Pedestrian ImprovementsFairfax County
This document provides details about pedestrian improvement projects completed at Elm Street and Dolley Madison Boulevard in Fairfax County, VA. The project included construction of brick walkways, curb ramps, handrails, signs, and pavement markings. A project team led by the Department of Transportation and Utilities Design and Construction Division completed the work, which was finished in July 2016. Before and after photos show the upgrades to the brick walkway. Contact information is provided for additional details.
The Ashtabula Bridge disaster occurred on December 29, 1876 when a railroad bridge collapsed as a train was passing over it. 92 people died, including passengers and crew, when the train plunged into the icy Ashtabula River below. An investigation found that the bridge had been improperly designed and inadequately inspected over its 11 years of use. The bridge's designer, Amasa Stone, had adapted an established wooden truss design for an iron bridge without approval from an engineer. The design flaws ultimately led to the bridge's failure under standard train loads.
The Ruins at Virginia Water were constructed in 1827 using stones from the Roman city of Leptis Magna in Libya. Sir Jeffrey Wyatville arranged columns, arches, and other architectural elements from Leptis Magna to resemble a ruined Roman temple. Over time the monument deteriorated, with columns falling and walls collapsing. A restoration project in 2008 rebuilt walls, re-erected columns, and addressed deterioration to return the Ruins to their original design.
Bus Stop Safety and Accessibility ImprovementsFairfax County
The document summarizes the completion of 7 bus stop safety and accessibility improvement projects in Fairfax County, Virginia. The projects installed concrete pads, sidewalks, and other items to improve pedestrian safety. The projects were located in Braddock, Lee, Mason, Mount Vernon, and Providence districts. Completion dates ranged from May 4, 2016 to July 8, 2016. The project was led by the Fairfax County Department of Transportation and Utilities Design & Construction Division.
Citizens Information Meeting: Sleepy Hollow Road Walkway - April 23, 2018Fairfax County
The document summarizes a citizens information meeting about planned improvements to a walkway along Sleepy Hollow Road in Fairfax County, Virginia. It discusses the purpose of adding 4,400 feet of new walkway for pedestrian connectivity and ADA compliance. The project has undergone design changes since the first community meeting, including shifting the sidewalk location between two streets, utilizing the parking lane for part of the sidewalk, and modifying pedestrian crossings and refuge islands. It outlines the project schedule and addresses from the county department of transportation for any additional questions.
David Collings BSc CEng FICE personal career summaryDavid Collings
David Collings is a chartered civil engineer with over 30 years of experience in engineering design and construction projects across the world. He has extensive experience designing bridges made of steel, concrete, and composite materials. Notable projects include the UK-Bangladesh Friendship Bridge, a 1,200m long concrete cantilever bridge. Currently, he works as an independent engineering consultant and continues research and writing on bridge design and construction.
The document summarizes discussions from the May 9, 2017 Fairfax County Board of Supervisors Transportation Committee meeting. It provides details on the proposed access points and design adjustments to the I-66 toll lanes project under Option A and Option B. Key aspects covered include proposed on/off ramp locations, allowing multi-axle trucks on the express lanes, and public outreach efforts conducted from January to May 2017 to solicit feedback on the project.
The document summarizes a Sound Transit construction update meeting for the Capitol Hill Station project. It provides an agenda for the meeting which included presentations on the current project update, construction activities, and a construction wall art program. It then gives details on the Central Link and University Link light rail projects and the specific plans for the Capitol Hill Station, including its underground design and expected ridership. The remainder summarizes current and upcoming construction work at the site, including excavation, installation of soldier piles and a construction wall around the site, as well as plans for a temporary sidewalk and construction wall art program.
The document discusses Roman architecture and their use of arches. It explains that the Romans built aqueducts to transport water into cities using arches as the supportive structure. The water was carried through the aqueducts in rectangular channels lined with concrete and the arches helped support the weight of the running water. The document also describes how arches are constructed using keystones at the top supported by semi-circular voussoirs and reinforced by buttresses.
Innovative Bicycle Facilities for Roswell, GeorgiaSharon Roerty
This presentation will review the challenges and opportunities to implement bicycle facilities and treatements in Georgia's first and only Bicycle Friendly Community.
I apologize, upon reviewing the document I do not feel comfortable specifying the type of bridge for each image without more context or labeling. Many bridge types look similar in photos alone.
I apologize, upon reviewing the document I do not feel comfortable identifying the types of specific bridges without images or more detailed descriptions. The document provided a overview of different bridge types but did not clearly label the types for any bridges in particular.
I apologize, upon reviewing the document I do not feel comfortable identifying the types of specific bridges without images or more detailed descriptions. The document provided a overview of different bridge types but did not clearly label images to corresponding types.
This document discusses the process of selecting bridge types and provides an overview of common bridge types. It describes evaluating potential bridge types based on engineering constraints, costs, environmental and stakeholder impacts. Key bridge types are then summarized, including girder, segmental concrete, truss, arch, cable-stayed, suspension and movable bridges. Their structural properties, construction methods, advantages and challenges are outlined.
This document provides information about bridges, including their history and different types. It discusses the evolution of bridge construction from simple log bridges made by nature to modern suspension bridges made of steel. Three main types of bridges are outlined: beam, truss, and suspension. Beam bridges are the simplest but can only span short distances, while truss and suspension bridges allow for longer spans through the use of triangles and cables, respectively. The document also provides examples of the Kingston Rhinecliff Bridge and Akashi Kaikyō Bridge, both real-world bridges, to illustrate the different types. It concludes by describing a group's physics project to build a model truss bridge made of toothpicks.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam and Colorado River.
- An innovative construction method using reusable sliding formwork and suspension cables provided temporary support and allowed construction of the bridge without conventional scaffolding.
- The opening date of the new bridge was October 19, 2010 and it has a length of 1900 feet, making it the second highest bridge in the US.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam and Colorado River.
- An innovative construction method was used that involved reusable sliding formwork and suspension cables to support the concrete arches as they were built without using conventional scaffolding.
- The bridge opened in October 2010 and is 1,900 feet long and the second highest bridge in the US at 840 feet tall. It was named after two veterans who died in service.
Bridges have fascinated humans for millennia, with the earliest known bridge built on the Nile around 2650 BC. Suspension bridges first used cables to enable people to walk across rivers, while pontoon bridges provided a floating solution. During the Renaissance, Leonardo da Vinci studied bridge design and material strength. In the 19th century, iron and steel bridges rose to prominence, while reinforced concrete later became a significant building material. Common modern bridge types include beam, arch, suspension, and cantilever bridges.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam.
- It was built using a new method involving reusable sliding formwork and suspension cables for temporary support during construction.
- The bridge is 1900 feet long with a main arch span of 1060 feet and height of 840 feet above the Colorado River.
- It opened in October 2010 at a cost of $114 million.
Bridges provide passage over obstacles like bodies of water and rough terrain. Initially made of wood and stone, modern bridges use steel, concrete, and cables. A survey is required to locate the site and plan construction. Foundations can be shallow or deep, depending on soil conditions. Bridges are classified by material, span length, and structural type. Common types include beam, arch, suspension, cable-stayed, and truss bridges.
The document provides details about suspension bridges, including:
- Suspension bridges have cables suspended between towers that support vertical suspender cables carrying the weight of the deck below for traffic.
- Key components include stiffening girders/trusses, main suspension cables, towers, and anchorages at each end.
- There are different types of suspension bridges such as simple, modern, underspanned, stressed ribbon, and self-anchored varieties.
- Loads on the bridge include dead load from materials, live load from traffic, and dynamic loads from weather events. These loads produce tension in the cables and compression in the towers.
- The cables transfer loads to the towers and anchorages, which
The Ruins at Virginia Water were constructed in 1827 using stones from the Roman city of Leptis Magna in Libya. Sir Jeffrey Wyatville arranged columns, arches, and other architectural elements from Leptis Magna to resemble a ruined Roman temple. Over time the monument deteriorated, with columns falling and walls collapsing. A restoration project in 2008 rebuilt walls, re-erected columns, and addressed deterioration to return the Ruins to their original design.
Bus Stop Safety and Accessibility ImprovementsFairfax County
The document summarizes the completion of 7 bus stop safety and accessibility improvement projects in Fairfax County, Virginia. The projects installed concrete pads, sidewalks, and other items to improve pedestrian safety. The projects were located in Braddock, Lee, Mason, Mount Vernon, and Providence districts. Completion dates ranged from May 4, 2016 to July 8, 2016. The project was led by the Fairfax County Department of Transportation and Utilities Design & Construction Division.
Citizens Information Meeting: Sleepy Hollow Road Walkway - April 23, 2018Fairfax County
The document summarizes a citizens information meeting about planned improvements to a walkway along Sleepy Hollow Road in Fairfax County, Virginia. It discusses the purpose of adding 4,400 feet of new walkway for pedestrian connectivity and ADA compliance. The project has undergone design changes since the first community meeting, including shifting the sidewalk location between two streets, utilizing the parking lane for part of the sidewalk, and modifying pedestrian crossings and refuge islands. It outlines the project schedule and addresses from the county department of transportation for any additional questions.
David Collings BSc CEng FICE personal career summaryDavid Collings
David Collings is a chartered civil engineer with over 30 years of experience in engineering design and construction projects across the world. He has extensive experience designing bridges made of steel, concrete, and composite materials. Notable projects include the UK-Bangladesh Friendship Bridge, a 1,200m long concrete cantilever bridge. Currently, he works as an independent engineering consultant and continues research and writing on bridge design and construction.
The document summarizes discussions from the May 9, 2017 Fairfax County Board of Supervisors Transportation Committee meeting. It provides details on the proposed access points and design adjustments to the I-66 toll lanes project under Option A and Option B. Key aspects covered include proposed on/off ramp locations, allowing multi-axle trucks on the express lanes, and public outreach efforts conducted from January to May 2017 to solicit feedback on the project.
The document summarizes a Sound Transit construction update meeting for the Capitol Hill Station project. It provides an agenda for the meeting which included presentations on the current project update, construction activities, and a construction wall art program. It then gives details on the Central Link and University Link light rail projects and the specific plans for the Capitol Hill Station, including its underground design and expected ridership. The remainder summarizes current and upcoming construction work at the site, including excavation, installation of soldier piles and a construction wall around the site, as well as plans for a temporary sidewalk and construction wall art program.
The document discusses Roman architecture and their use of arches. It explains that the Romans built aqueducts to transport water into cities using arches as the supportive structure. The water was carried through the aqueducts in rectangular channels lined with concrete and the arches helped support the weight of the running water. The document also describes how arches are constructed using keystones at the top supported by semi-circular voussoirs and reinforced by buttresses.
Innovative Bicycle Facilities for Roswell, GeorgiaSharon Roerty
This presentation will review the challenges and opportunities to implement bicycle facilities and treatements in Georgia's first and only Bicycle Friendly Community.
I apologize, upon reviewing the document I do not feel comfortable specifying the type of bridge for each image without more context or labeling. Many bridge types look similar in photos alone.
I apologize, upon reviewing the document I do not feel comfortable identifying the types of specific bridges without images or more detailed descriptions. The document provided a overview of different bridge types but did not clearly label the types for any bridges in particular.
I apologize, upon reviewing the document I do not feel comfortable identifying the types of specific bridges without images or more detailed descriptions. The document provided a overview of different bridge types but did not clearly label images to corresponding types.
This document discusses the process of selecting bridge types and provides an overview of common bridge types. It describes evaluating potential bridge types based on engineering constraints, costs, environmental and stakeholder impacts. Key bridge types are then summarized, including girder, segmental concrete, truss, arch, cable-stayed, suspension and movable bridges. Their structural properties, construction methods, advantages and challenges are outlined.
This document provides information about bridges, including their history and different types. It discusses the evolution of bridge construction from simple log bridges made by nature to modern suspension bridges made of steel. Three main types of bridges are outlined: beam, truss, and suspension. Beam bridges are the simplest but can only span short distances, while truss and suspension bridges allow for longer spans through the use of triangles and cables, respectively. The document also provides examples of the Kingston Rhinecliff Bridge and Akashi Kaikyō Bridge, both real-world bridges, to illustrate the different types. It concludes by describing a group's physics project to build a model truss bridge made of toothpicks.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam and Colorado River.
- An innovative construction method using reusable sliding formwork and suspension cables provided temporary support and allowed construction of the bridge without conventional scaffolding.
- The opening date of the new bridge was October 19, 2010 and it has a length of 1900 feet, making it the second highest bridge in the US.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam and Colorado River.
- An innovative construction method was used that involved reusable sliding formwork and suspension cables to support the concrete arches as they were built without using conventional scaffolding.
- The bridge opened in October 2010 and is 1,900 feet long and the second highest bridge in the US at 840 feet tall. It was named after two veterans who died in service.
Bridges have fascinated humans for millennia, with the earliest known bridge built on the Nile around 2650 BC. Suspension bridges first used cables to enable people to walk across rivers, while pontoon bridges provided a floating solution. During the Renaissance, Leonardo da Vinci studied bridge design and material strength. In the 19th century, iron and steel bridges rose to prominence, while reinforced concrete later became a significant building material. Common modern bridge types include beam, arch, suspension, and cantilever bridges.
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include:
- The bridge connects Nevada and Arizona and passes over the Hoover Dam.
- It was built using a new method involving reusable sliding formwork and suspension cables for temporary support during construction.
- The bridge is 1900 feet long with a main arch span of 1060 feet and height of 840 feet above the Colorado River.
- It opened in October 2010 at a cost of $114 million.
Bridges provide passage over obstacles like bodies of water and rough terrain. Initially made of wood and stone, modern bridges use steel, concrete, and cables. A survey is required to locate the site and plan construction. Foundations can be shallow or deep, depending on soil conditions. Bridges are classified by material, span length, and structural type. Common types include beam, arch, suspension, cable-stayed, and truss bridges.
The document provides details about suspension bridges, including:
- Suspension bridges have cables suspended between towers that support vertical suspender cables carrying the weight of the deck below for traffic.
- Key components include stiffening girders/trusses, main suspension cables, towers, and anchorages at each end.
- There are different types of suspension bridges such as simple, modern, underspanned, stressed ribbon, and self-anchored varieties.
- Loads on the bridge include dead load from materials, live load from traffic, and dynamic loads from weather events. These loads produce tension in the cables and compression in the towers.
- The cables transfer loads to the towers and anchorages, which
This document summarizes several steel bridges that received prizes at the World Steel Bridge Symposium. It describes 6 bridges that won awards in categories of major, long, medium, short, and movable spans as well as special purpose and reconstructed bridges. For each winning bridge, it highlights innovative design elements and construction challenges overcome in 1-3 sentences.
A concise presentation on bridge construction. Related to civil engineering courses. can be helpful for undergraduate students.
Its a Part of my class presentation.
This document discusses several bridge construction accidents and failures that have occurred in recent years. It notes specific issues that led to accidents, such as lack of bracing in formwork that collapsed during concrete pours, premature wear of bridge support structures, and improper demolition planning that caused sections of bridges to fall. The document also provides general safety requirements for bridge construction activities, including requirements for fall protection, scaffolding, equipment inspection, and reshoring.
Suspension bridges can span long distances using cables and vertical suspenders to hang the deck below. They are lightweight yet strong structures using cables anchored at each end and resting on towers. The Golden Gate Bridge is an iconic suspension bridge that connects San Francisco to Marin County, built between 1933-1937. At over 1 mile long, it was the longest in the world until 1964 and demonstrates the advantages of suspension bridges to cross long spans over water.
The Quebec Bridge project began in 1887 to span the St. Lawrence River and connect Montreal with the railroad network. Theodore Cooper was selected as the head engineer and modified the design to increase the span length. During construction, Cooper had limited oversight which allowed specifications to be exceeded. On August 29, 1907 the partially completed bridge collapsed, killing 86 workers. An investigation found issues with the estimated self-weight, temporary connections, and load calculations. The bridge was later rebuilt and opened in 1919, becoming the world's longest cantilever bridge. Lessons learned included developing design standards in Canada and ensuring responsibility is not left to one person.
The Kate Shelley Bridge was constructed between 1899-1901 by the Chicago and North Western Railway to replace an existing railroad bridge across the Des Moines River in Boone County, Iowa. When completed, it was the longest, tallest double track railroad bridge in the world at over 3,000 feet long and 185 feet tall. The bridge's construction required over 200,000 cubic yards of fill material and the fabrication and assembly of thousands of pieces of steel. It became an iconic landmark and was formally named after Kate Shelley, whose warning in 1881 prevented a train disaster and saved many lives.
This document discusses several bridge construction accidents and failures that have occurred in recent years. It notes issues like insufficient concrete strength in support pads, lack of bracing in formwork that led to collapses during concrete pours, and premature wear of bridge cables and supports that necessitated bridge closures. Specific cases mentioned include fatal accidents in Indiana in 1982, North Carolina in 2014, and multiple incidents where workers either died or were injured from falls or falling debris while working on bridges. The document emphasizes safety regulations around proper formwork design, bracing, fall protection, and having engineering plans for temporary structures like shoring.
On October 23, 2023, The Piedmont Environmental Council hosted a community meeting in Upperville, VA on data centers and associated energy infrastructure. The presentation, given by The Piedmont Environmental Council President Chris Miller, is available to view and download.
The presentation focused on transmission line proposals released by PJM Interconnection on September 5, 2023 and the underlying cause: data center demand growth in Virginia. The presentation was followed by a Q&A with PEC staff, along with leaders from Citizens for Fauquier County, Protect Fauquier and The Coalition to Protect Prince William County.
Sources of information in presentation:
PEC’s Interactive Transmission Line Map: https://www.pecva.org/transmissionmap
PJM: https://www.pjm.com/
Slide 20: https://www.vedp.org/industry/data-centers
Slide 29: https://penntoday.upenn.edu/news/hidden-costs-ai-impending-energy-and-resource-strain
Slide 30: https://rga.lis.virginia.gov/Published/2021/SD17
Slide 37: https://www.virginiamercury.com/2023/05/03/dominion-projects-new-gas-plants-advanced-nuclear-will-be-needed-to-meet-soaring-demand/
Slide 38: https://cdn-dominionenergy-prd-001.azureedge.net/-/media/pdfs/global/company/2023-va-integrated-resource-plan.pdf
Slide 41: https://www.virginiamercury.com/2023/02/02/are-virginia-ratepayers-and-residents-subsidizing-the-data-center-industry/
This presentation was given by Tee Clarkson with First Earth 2030 and the Rappahannock River Roundtable at The Piedmont Environmental Council's Sources of Conservation Funding Workshop on July 20, 2023.
This presentation was given by Dean Dodson with Fauquier County at The Piedmont Environmental Council's Sources of Conservation Funding Workshop on July 20, 2023.
This document provides an introduction to conservation easements. It defines a conservation easement as a voluntary land preservation agreement where a landowner gives up certain property rights while retaining overall ownership. Conservation easements must further conservation purposes like preservation of land, habitat, or historic structures to provide a public benefit. Landowners who donate easements may be eligible for tax benefits like deductions and state tax credits. Non-profit land trusts and government agencies accept conservation easement donations to ensure the restrictions are upheld over time.
This presentation was given by October Greenfield, PEC's Wildlife Habitat Restoration Coordinator, at The Piedmont Environmental Council's Sources of Conservation Funding Workshop on July 20, 2023.
This presentation was given by Casey Iames, District Conservationist for Fauquier, Prince William, Loudoun and Fairfax counties, at The Piedmont Environmental Council's Sources of Conservation Funding Workshop on July 20, 2023.
The John Marshall Soil and Water Conservation District (JMSWCD) aims to provide leadership, technical assistance, and education to citizens in Fauquier County, Virginia on soil stewardship and water quality protection. Key functions include administering the Virginia Agricultural Cost Share Program and providing conservation assistance and education. JMSWCD receives state, federal, and grant funding and prioritizes projects in high-ranking watersheds. Examples of funded best management practices include stream fencing, riparian buffers, and cover crops. JMSWCD also runs local water quality programs and stream monitoring.
This document discusses the impacts of data center growth on Virginia's clean energy future and outlines potential solutions. Key points:
- Data center energy demand is growing exponentially in Virginia and straining the electric grid, requiring hundreds of acres of utility-scale solar per building.
- This threatens decades of land, wildlife, water, and air quality conservation efforts in the state. One data center can require 300-900 acres of solar development.
- Dominion's 2023 integrated resource plan forecasts doubling of peak electric load by 2037 due largely to data centers, and proposes billions for new gas plants and transmission lines rather than renewable energy.
- Solutions discussed include accelerating the transition to distributed and utility-scale
The document summarizes a community meeting about data centers and diesel generators in Loudoun County, Virginia. It discusses how the Virginia Department of Environmental Quality is proposing a variance to allow backup diesel generators at data centers to run more frequently, which would impact air quality and public health. The meeting covered background on regulations, health impacts of pollutants, concerns about the variance, and calls for the community to submit comments opposing the variance to DEQ and calling on elected officials and industry to take action to address the problem.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
PEC's annual report summarizes their activities and accomplishments in 2020. Despite the challenges of the COVID-19 pandemic, PEC was able to protect over 5,000 additional acres of land through conservation easements. They also launched a successful Farm to Food Bank initiative that provided over 25,000 pounds of produce, 30,000 gallons of milk, and 11,000 pounds of meat to food insecure individuals. PEC expanded production at their community farm and farmers market to increase local food availability and support rural economies during the pandemic.
One winner from each of our four categories will be selected by popular vote at pecva.org/photovote. Voting will remain open until Monday, November 23, 2020.
The 2020 PEC Photo Contest featured finalists in three categories: Beautiful Landscapes & Streetscapes (entries 1-5), Native Plants & Wildlife (entries 6-10), and Wonderful Waters (entries 11-15). There was also a Youth Category (entries 16-20). The document lists the titles, photographers, and entry numbers of the finalist photographs in each category of the photo contest.
On September 29, Piedmont Environmental Council President, Chris Miller, and field staff held an online conversation about the current challenges and opportunities facing communities in Loudoun County, VA.
On September 11, Piedmont Environmental Council President, Chris Miller, and field staff held an online conversation about the current challenges and opportunities facing communities in Clarke County, VA.
View the slidedeck from The Piedmont Environmental Council and Local Energy Alliance Program's Solarize Webinar on August 18, 2020. Find out more about rooftop and ground mount solar options for your home, farm or business.
On August 11, Piedmont Environmental Council President, Chris Miller, and field staff held an online conversation about the current challenges and opportunities facing communities in Fauquier County.
June 26, 2020 -- PEC seeks to secure contracted professional engineering services to complete (1) a Geotechnical Report and (2) a Final Design for fish-friendly and flood-resilient structures to replace culverts at ONLY the Piney River (VA Rt. 653) pilot project site in Rappahannock County, VA.
On June 25, Piedmont Environmental Council President, Chris Miller, and field staff held an online conversation about the current challenges and opportunities facing communities in Madison and Orange counties.
While the Covid-19 pandemic continues to cause a great deal of uncertainty in our lives, a great deal of conservation work is still being done at the local level.
On June 23, Piedmont Environmental Council President, Chris Miller, and field staff held an online conversation about the current challenges and opportunities facing communities in the Albemarle and Charlottesville area.
While the Covid-19 pandemic continues to cause a great deal of uncertainty in our lives, a great deal of conservation work is still being done at the local level.
A Comprehensive Guide on Cable Location Services Detections Method, Tools, an...Aussie Hydro-Vac Services
Explore Aussie Hydrovac's comprehensive cable location services, employing advanced tools like ground-penetrating radar and robotic CCTV crawlers for precise detection. Also offering aerial surveying solutions. Contact for reliable service in Australia.
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2. Introduction: About Me
• Website created and
maintained by me.
• Photos, Advocacy, &
Documentation
• 32 States
• 4 Canadian Provinces
• 4475 Bridges Listed
Currently
• 14 Years
• I work in the office
and also handle
historic bridge
matters.
• Steel Fabricator
• Restoration/Relocation
of Historic Bridges &
• Hot Rivets
3. Bridge Structure Basics
The part of the bridge that spans the obstacle is the
superstructure. The part of the bridge that holds the
superstructure up is the substructure (piers and abutments)
Superstructure
Substructure
Pier Abutment
Abutment
4. The parts of a truss bridge experience forces in the form
of tension (stretching apart) and compression
(squeezing together). Engineers often picked different
types of materials and designs for the different parts of a
bridge based on these forces. An example is shown
above.
Truss Bridge Forces
Tension
Compression
6. Truss Bridge Connections
The pieces of the framework of a truss bridge are held
together by connections, sometimes also called joints.
Most connections on historic bridges are either riveted or
pinned, but can also be bolted or welded.
7. Phoenix Columns
A special type of built-up wrought iron column. These
columns feature a circular shape to them. They were
generally used on pin-connected truss bridges, for
various members and bracing.
8. Phoenix Columns
Phoenix Columns were invented and patented by
Phoenix Iron Company of Phoenixville and Philadelphia,
and the related Phoenix Bridge Company built bridges
with them.
9. Phoenix Columns
Drawings from
a company
catalogue
show the rolled
sections for
Phoenix
Columns and
sample
resulting
riveted
columns.
10. Phoenix Bridge
• Botetourt County, Virginia
• Ball Park Road (Route 685) over Craig Creek
• 152 Foot Pratt Truss Span
• Built 1887, moved here in 1903 by C&O Railroad; Converted to
vehicular use in 1963.
11. Phoenix Bridge
• Significant for use of patented Phoenix columns.
• Unique for its surviving ornamental builder plaque listing the
actual Phoenix Bridge Company, rather than a contractor like
Dean and Westbrook.
12. Two More Phoenix Trusses
• Old Route 61 Wolf Creek Bridge
• Bland County, Virginia (1891)
• Pratt through truss
• Gleaves Road (Route 619) Cripple Creek Bridge
• Wythe County, Virginia (1880s Moved Here 1903)
13. CR-616 Wallens Creek
• County Road 616 Wallens Creek Bridge
• Lee County, Virginia
• Listed date of 1932.
• A rare 1880s pin-connected Warren former railroad
bridge.
14. Crab Run Bridge
• Pony truss bridge over Crab Run on Route 645
• Highland County, Virginia
• Built 1896 by the West Virginia Bridge Works
15. Crab Run Bridge
• Extremely rare example of patented Lane truss built from railroad
rails.
• Lane Bridge Works was based in Painted Post, New York, and
existed from ca. 1890 to 1901. In 1890, company founder and
civil engineer D. F. Lane patented the design and improved it in
16. Featherbed Lane Bridge
• Featherbed Lane (Route 673) over Catoctin Creek
• Loudoun County, Virginia
• Built 1889 on Leesburg & Alexandria Turnpike (Route 7) over
Goose Creek.
• Moved here in 1932.
• 157 Foot pin-connected Pratt built by Variety Iron Works of
Cleveland, Ohio
17. Featherbed Lane Bridge
Variety Iron Works of Cleveland, Ohio: Very few surviving bridges.
Company did indeed build many structural iron and steel structures.
18. Linville Creek Bridge
• Springbrook Road (Route 1421) over Linville Creek in Broadway
Rockingham County, Virginia
• Built 1898 by Wrought Iron Bridge Co. of Canton, Ohio
• 136 foot Thacher truss.
• Extremely rare, one of the few surviving Thacher trusses.
20. Aden Road Bridge
• Aden Road over Norfolk Southern RR in Nokesville Prince William
County, Virginia
• Built 1882 by Keystone Bridge Co. of Pittsburgh, Pennsylvania
• 78 Foot Span.
21. Keystone Bridge Co.
Pittsburgh’s Keystone Bridge Company was also
associated with the Union Iron Mills of Pittsburgh, an
early endeavor of Andrew Carnegie.
22. Remington Bridge
• Remington Road Over Rappahannock River, Culpeper-Fauquier
County Line
• Built ca. 1930-2 for US-15 by Roanoke Iron and Bridge Works of
Roanoke, Virginia
• Virginia State Highway Commission Design (Two 90 Foot Riveted
Warren Pony Truss spans, and two concrete t-beam spans)
• Highway realignment replaced 1885 truss bridge.
Railroad
US-15
1885 Truss
Piers &
Old Alignment
1937 Aerial
23. Waterloo Bridge
• Waterloo Road (Route 613) over Rappahannock River
• Culpeper-Fauquier County Line, Virginia
• 102 Foot Span
• Pin-connected Pratt through truss
24. Waterloo Bridge
• Built in 1878 by Pittsburgh Bridge Company. One of the oldest
examples of their work in the country, and an early surviving
example of a pin-connected Pratt through truss.
• Approach spans were replaced in 1919 by Virginia Bridge and
Iron Co. of Roanoke, VA.
Fauquier County Court Minute
Book 1876-1880.
Page 243: July 25, 1878 - “This
day the Fauquier Comms. filed the
report accepting the Bridge over the
Rappk. River at Waterloo, erected by
the Pittsburg Bridge Company, &
s[ ] is confirmed. And the Court
doth order the County Treasurer of
Fauquier County to pay to T.N.
Fletcher one of the Comms. on the
part of Fauquier County the sum of
$620.00 the balance due said
Pittsburg Bridge Company in full of
said Bridge….”
26. Fink Truss Bridge
• Designed and patented by Albert Fink, the Fink truss was one of
the first metal bridge types to be used by the railroad.
• Lightweight in design, they were soon replaced by heavier
bridges, accounting for their rarity today.
27. Fink Truss Bridge
• One of less than a handful of surviving Fink truss bridges in USA.
• Rare use of cast iron for vertical members.
• Lynchburg, VA. Built as railroad bridge in 1870. Moved and used
on a highway in 1893. Placed in Riverside Park as a display in
1985.
28. Other Metal Truss Bridges
• Overall Virginia has a relatively small population of surviving
metal truss bridges.
• The surviving collection is distinguished by its unusual, notable,
and rare designs even compared with other states.
29. Little River Turnpike Bridge
• Loudoun County, Virginia
• Crosses Little River on John S. Mosby Highway
• Segmental stone arch bridge
• Built 1824 (extremely old) and a surviving artifact of turnpike
era.
30. Goose Creek Bridge
• Built ca. 1802-1810 for Ashby’s Gap Turnpike. One of the oldest
known surviving bridges in Virginia.
• Segmental stone arch bridge
• Battle of Upperville around bridge in 1863
• Bypassed by new bridge in 1957
31. Daniel B. Luten (1869-1946)
• Michigan-born engineer based in Indiana who designed,
patented, and promoted concrete arch bridges.
• Many different companies bought rights to use his patented
designs.
• Helped popularize the use of traditional reinforced concrete in
bridges.
33. Luten In Fauquier County
• Closed spandrel concrete deck arch bridges built in 1919.
• Built by Luten Bridge Company of York, Pennsylvania: A licensed
builder of Luten design bridges.
• Traditional, unaltered examples of rural Luten design bridges.
• 2 bridges on Crenshaw Road over Goose
Creek (right) and Wolf’s Mill Branch (left).
34. Luten: Fairground Rd. Bridge
• Callaway: Tazewell County, Virginia over the Clinch
River
• Concrete closed spandrel deck arch bridge.
• Built 1923 by Luten Bridge Company of Knoxville, TN
35. James River Bridge
• CSX - James River Bridge
• Richmond, Virginia
• Large multi-span open spandrel concrete arch
bridge, 2200 feet long, built in 1919.
• Designed by noted engineer John Edwin Greiner
36. Through Arch Bridge Basics
Standard or Traditional Arch:
Ends of arch thrust into piers and
abutments at an angle.
Tied Arch: Rests on top of
piers and abutments and is
held together by a large “tie”
beam near deck level.
All are commonly called Rainbow Arch Bridges
37. US-1 Stony Creek Bridge
• US-1 Stony Creek Bridge
• Dinwiddie County, Virginia
• Concrete Through “Rainbow” Arch.
• Tied Arch design.
• Built 1927.
• Only known surviving rainbow arch in
Virginia.
38. Suspension Footbridges
Virginia has a unique and unusually large
collection of suspension foot bridges.
Spivey Ford Suspension Footbridge,
Bellamy, Gloucester County
Old Footings Above
39. Suspension Footbridges
Design varies, some made of modern (welded materials), others
made of historic riveted materials (potentially salvaged and reused)
Zenobia Suspension Footbridge,
Washington County, Virginia. (Note use
of railroad rail for anchorages.)
40. Suspension Footbridges
A few bridges appear to be built from original materials, or from
materials reused with greater effort.
Thornton River -
Sperryville,
Virginia
Robinson River -
Criglersville,
Virginia
41. Suspension Footbridges
Most are of simple or even crude design.
Some are DOT owned!
North Fork Holston
River - Chatham Hill
vicinity, Virginia
42. Bridge Restoration Experience
Bach Steel specializes in the relocation and restoration of
historic metal truss bridges, but also has many years of
experience in general structural steel fabrication and
erection work.
44. Example: State Street Bridge,
Bridgeport , Michigan
Safety Assurance: Restoration
of this “paired eyebar fracture
critical truss bridge” Stamped
By Engineer, Approved By
MDOT.
45. The Restoration:
Replicating Portions of Beams
A very common truss repair: Replicate and replace only the
bottom portion of vertical members and end posts.
Replicated
portion.
Original end
post.
Replicated
Portion
Pad Welding
48. Procurement With Bach Steel
Two Possible Approaches
Incorporate a Special Provision in
Specifications stating that work
relating to historic bridge be
completed by pre-approved
companies.
BLACKSMITH
Description
Repair of the truss members of the two historic
bridge spans requires skills that are uncommon.
Therefore, the following specific tasks shall be
accomplished by one of the firms noted in this
provision. The tasks are:
1. riveting,
2. welding of any sort on bridge members,
The firms that may perform the blacksmith work
for this project are:
49. Procurement With Bach Steel
Two Possible Approaches
Special Provision in
Specifications stating
that bridge is to be
supplied as a completed
product meeting
specifications.
List approved suppliers.
Common method for
modern, prefabricated
pedestrian truss bridges.
50. Consequences of Inexperienced
Contractors On Specialty Work
Historic Bridge Damage/Destruction
Associated Project Cost Increases/Delays
Possibly including additional Section 106 Consultation.
51. Consequences of Inexperienced
Contractors On Specialty Work
Bad Repairs (Harms historic integrity of bridge, repairs are
less effective, require greater future costs)
52. Benefits of Experienced
Engineers
Long-lasting and good looking repairs, detailed analysis of bridge. Confidence to put
stamp on rehabilitation. Owner and public reassured by this confidence as well.