BRIDGESBRIDGES
Engineer-It ClassEngineer-It Class
Summer 2004Summer 2004
HistoryHistory
• Primitive Peoples:Primitive Peoples:
– LogsLogs
– Slabs of RocksSlabs of Rocks
– Intertwined Vines or Rop...
Rock BridgesRock Bridges
Wadi Rum Rock Bridge
View under Rainbow Bridge, a
massive sandstone bridge in
Natural Bridges National
Monument, Utah, includes a dried
up stre...
Rope BridgesRope Bridges
Log BridgesLog Bridges
LOG BRIDGELOG BRIDGE
Members of a DenverMembers of a Denver
and Salt Lake Railroadand Salt Lake Railroad
Company (D&SL)Com...
View of a settlement in (probably) Utah; shows a log bridge, a stream, and houses.
People sit on a porch; a United States ...
U.S. Army soldiers from the Ohio Engineers, building a small
log bridge over a ditch, at Fort Sheridan, Illinois
LOG BRIDGELOG BRIDGEView of hot springs site enclosed by stone andView of hot springs site enclosed by stone and
wooden fr...
Covered BridgesCovered Bridges
COVEREDCOVERED
BRIDGEBRIDGE
• Bridges. OldBridges. Old
covered bridge,covered bridge,
Jackson River,Jackson River,
Va.Va.
Structure of covered bridge. Wallingford, Vermont
Covered Bridge, Glen
Canyon, Santa Cruz
County, CA
CONSTRUCTIONCONSTRUCTION
• Must carry own weight and weight of trafficMust carry own weight and weight of traffic
– Must w...
TYPES OF BRIDGESTYPES OF BRIDGES
• FixedFixed
• MoveableMoveable
• OtherOther
Beam or Girder BridgesBeam or Girder Bridges
FIXEDFIXED
• Beam or GirderBeam or Girder
– Two parallel beams w/ flooring supported byTwo parallel beams w/ flooring supp...
Cars on a suspension bridge over a river, possibly in Colorado.
enz_bridge.jpg
Millennium Bridge, LondonMillennium Bridge, London
ostruz.jpg www.prevodi-vertalingen.com/.../ ostruz.html
Truss BridgesTruss Bridges
FIXEDFIXED
• TrussTruss
– Beam bridge strengthed by trusses (structuralBeam bridge strengthed by trusses (structural
spts ...
Timber Truss BridgeTimber Truss Bridge
Continuous Truss BridgesContinuous Truss Bridges
View west of an iron truss bridge crossing the Colorado River on the Denver
and Rio Grande Railroad Montrose line at Grand...
View of the bridge crossing the White River at Meeker, CO
White Water Creek Bridge, Spanning White Water Creek,
Bernard vicinity, Dubuque County, IA
Truss BridgeTruss Bridge
View of a trestle bridge that
crosses Arastra Gulch near
Silverton (San Juan County),
Colorado.
Jefferson Barracks Bridge
Location: Mississippi River, Jefferson Barracks, Missouri
Simple Truss BridgesSimple Truss Bridges
FAI 24 Bridge Over the Ohio River
Paducah, Kentucky
www.modjeski.com/projects/ servproj/paducah.htm
gcdranet.homelinux.com/davehonan/ bridges/il.html Cairo
Ohio River ferry and railroad bridge, Metropolis, IL
Arch BridgesArch Bridges
FIXEDFIXED
• ArchArch
– One or more archesOne or more arches
– Masonry, reinforced concrete or steelMasonry, reinforced co...
AquaductAquaduct
Old stone bridge at Bull Run Battlefield. Manassas, Virginia.
Stone bridge in Rock Creek Park.
Stone bridge, Elizabeth Park, Hartford, Ct..
Old Stone Bridge, Boonton, N.J..
Stone Bridge at Bowling Green, Gallatin vicinity, Sumner County, TN
Segovia, Spain
Franklin Park, Ellicott Bridge, Emerald Necklace, Boston, MA
Pont du GardPont du Gard
Arch bridge, Bellows Falls, Vt..
Bayonne Bridge, Spanning Kill Van Kull between Bayonne &
Staten Is, Bayonne, Hudson County, NJ
Kill van Kull Bridge
[Hell Gate Bridge (New York Connecting RailroadBridge), New York].
[Hell Gate Bridge (New York Connecting RailroadBridge), New York].
Steel Arch Bridge, Niagara.Steel Arch Bridge, Niagara.
http://www.brokk.com/images/jpg/sando.jpg
Sydney, Australia
www.bardaglea.org.uk/.../ bridge-types-arch.html
Arches can also be set above the deck as on the Sydney harbour
bridge in ...
Blue Water Bridge
Blue Water Bridges are a major international crossing over the St. Clair river at the
southern end of La...
Eads Bridge, St. Louis
Port Mann Bridge, Coquitlam-Surrey BC
This graceful steel arch, once the third-longest of its kind in the world, carries t...
Cantilever BridgesCantilever Bridges
FIXEDFIXED
• CantileverCantilever
• Double-ended brackets supporting aDouble-ended brackets supporting a
center spancenter...
Quebec Bridge
Quebec Bridge
Quebec Bridge
Quebec Bridge
Quebec
Bridge
Quebec Bridge
Quebec Bridge
On June 15, 1907 an inspecting engineer noted that two girders of the anchor was
misaligned by a quarter of ...
Scotland's Firth of Forth
A period museum photo shows cranes atop the massive structure. The bridge
was constructed from 1...
http://www.brantacan.co.uk/cantilever.htm
Lewis and Clark Bridge (Longview-Rainier Bridge) across the Columbia River.
[Queensboro Bridge, Roosevelt Island, New York, N.Y.].
Astoria bridge
Suspension BridgesSuspension Bridges
FIXEDFIXED
• SuspensionSuspension
– Roadway hangs from vertical cables supported byRoadway hangs from vertical cables supp...
Tanana River suspension bridge.
http://tapseis.anl.gov/guide/photo/Tanana_Bridge.html
Tsing Ma Bridge, Hong Kong
Akashi-Kaikyo Bridge, JapanAkashi-Kaikyo Bridge, Japan
Brooklyn BridgeBrooklyn Bridge
The 3rd Carquinez Strait Bridge will replace the original bridge that was built in 1927.
Ambassador BridgeAmbassador Bridge
Ambassador BridgeAmbassador Bridge
Golden Gate BridgeGolden Gate Bridge
Golden GateGolden Gate
StructuresStructures
When it opened in 1964, the Verrazano Narrows Bridge was the
world's longest suspension span. Today, its length is surpass...
Verrazano
Tacoma Narrows Bridge collapsing, Tacoma, Washington, 1940
On the morning of November 7, 1940, the Tacoma Narrows Bridge t...
Cable-Stayed BridgesCable-Stayed Bridges
FIXEDFIXED
• Cable-StayedCable-Stayed
• Suspended by cables that run directlySuspended by cables that run directly
down to...
Sunshine Skyway Bridge, St. Petersburg and Bradenton, Florida
Sunshine Skyway Bridge, St. Petersburg and Bradenton, Florida
Clark Bridge in Alton, ILClark Bridge in Alton, IL
Clark Bridge in Alton, ILClark Bridge in Alton, IL
Clark Bridge in Alton, ILClark Bridge in Alton, IL
Dames Port Florida
Dames Port Florida
Dames Port Florida
Swing BridgesSwing Bridges
MOVEABLEMOVEABLE
• SwingSwing
• Central span turned 90 degrees on pivotCentral span turned 90 degrees on pivot
pier placed...
Catalog AdvertisementCatalog Advertisement
Moveable BridgeMoveable Bridge
BRIDGE ACROSS SHATT-AL-ARAB, IRAQBRIDGE ACROSS SHATT-AL-ARAB, IRAQ
Detail of south truss showing truss configuration and connections
HAER, MASS,2-WIND,1-3
Detail of south truss showing truss configuration and connections
HAER, MASS,2-WIND,1-3
Coleman Bridge,
Spanning Phelps
Brook, on Windsor
Bush Road, at th,
Windsor, Berkshire
County, MA
Bascule BridgesBascule Bridges
MOVEABLEMOVEABLE
• BasculeBascule
– One or two sections not supported by piersOne or two sections not supported by piers
–...
View of an elevated train crossing the Van Buren Street Railroad
Bridge which spanned the Chicago River from the Loop to t...
View of a bascule bridge over the Chicago River in Chicago, Illinois.
Haarlem old lifting bridge.
Lifting bridges are moveable bridges which enable
boats to pass. They vary from simple wooden ...
Erie Street Bridge, a bascule bridge, with the two leaves in raisedErie Street Bridge, a bascule bridge, with the two leav...
Sault Ste. Marie International Bridge
Erie Avenue Bridge
Newberry Bridge
Vertical Lift BridgesVertical Lift Bridges
MOVEABLEMOVEABLE
• Vertical LiftVertical Lift
– Central span extends between two towersCentral span extends between two to...
Vertical lift Baltimore (Pratt) through-truss railroad bridge
Cape Cod Canal Railroad Bridge
Buzzards Bay, Massachusetts
Leamington Lift Bridge, Scotland
Goethals Bridge, Spanning Arthur Kill from New Jersey to
Staten Isl, Staten Island, Richmond County, NY
Goethals Bridge, Spanning Arthur Kill from New Jersey to
Staten Isl, Staten Island, Richmond County, NY
GUIABA RIVER AT PORTO ALEGRE, BRAZIL
The vertical lift bridge that carries US-41 across the Portage Canal.
Aerial bridge, Duluth, Minn..
Aerial bridge, Duluth, Minn..
Aerial bridge, Duluth, Minn..
Bailey BridgesBailey Bridges
OTHEROTHER
• BaileyBailey
– Small truss bridge made in sectionsSmall truss bridge made in sections
– Assembled on shoreAss...
BaileyBailey
Tank destroyer advances along
a mountain road, Italy
Pontoon BridgesPontoon Bridges
OTHEROTHER
• PontoonPontoon
– Floats on waterFloats on water
– Can be disassembled and moved to new siteCan be disassemble...
The U.S. Army's
Sava River bridge is
taken apart at
nightfall and put
together in the
morning
View of James River Pontoon Bridge, from south side, above Jones' Landing.
Pontoon bridges, North Anna, constructed by the 50th N.Y.V.
Engineers, below railroad bridge, where a portion of the 2nd C...
Broadway Landing, Va. Pontoon bridge across
the Appomattox
Evergreen Floating BridgeEvergreen Floating Bridge
Evergreen Bridge.
The official name of the bridge is the Governor Albert D. Rosellini Bridge at
Evergreen Point, after a p...
Combined BridgesCombined Bridges
[Stony Brook glen,
Shawmut Bridge,
Dansville, N.Y.].
Knie_bridge
Lake_Pontchartrain_Causeway-vi.jpg
Lake_Pontchartrain_Causeway-vi.jpg
Old Alton Bridge
Name that BridgeName that Bridge
Give the type for each.Give the type for each.
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
Bridge project
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  • WadiRumRockBridge01.jpg
  • LOC Natural Bridges, Utah / Geo. L. Beam.
    Beam, George L. 1868-1935. (George Lytle),
    CREATED/PUBLISHED[between 1922 and 1925]
    SUMMARYView under Rainbow Bridge, a massive sandstone bridge in Natural Bridges National Monument, Utah, includes a dried up streambed.
    NOTESTitle supplied by cataloger; penciled on negative envelope: "Rainbow Bridge, Utah."
  • oldsunsetranch
  • CREATED/PUBLISHEDbetween 1905 and 1934.
    SUMMARYMembers of a Denver and Salt Lake Railroad Company (D&SL) survey crew pose on a log bridge over the Colorado River in Gore Canyon (Grand County), Colorado.
  • Ranch & log bridge
    Beam, George L. 1868-1935. (George Lytle),
    CREATED/PUBLISHED[between 1922 and 1935?]
    SUMMARYView of a settlement in (probably) Utah; shows a log bridge, a stream, and houses. People sit on a porch; a United States flag waves from a pole.
  • [U.S. Army soldiers from the Ohio Engineers, building a small log bridge over a ditch, at Fort Sheridan, Illinois.].
    Chicago Daily News, Inc., photographer.
    CREATED/PUBLISHED1917.
    SUMMARYImage of U.S. Army soldiers from the Ohio Engineers building a small log bridge over a ditch at Fort Sheridan, Illinois.
    NOTESThis photonegative taken by a Chicago Daily News photographer may have been published in the newspaper.
    Cite as: DN-0068472, Chicago Daily News negatives collection, Chicago Historical Society.
  • CREATED/PUBLISHED[between 1905, along Denver, Northwestern and Pacific Railway's Moffat Road; shows light snow covering ridge and muddy wagon tracks leading to wooden log bridge across stream. and 1913].
    SUMMARYView of hot springs site enclosed by stone and wooden frame buildings, Hot Sulphur Springs, Colorado
  • Bridges. Old covered bridge, Jackson River, Va..
    Horydczak, Theodor, ca. 1890-1971, photographer.
    CREATED/PUBLISHEDca. 1920-ca. 1950.
  • Structure of covered bridge. Wallingford, Vermont.
    Locke, Edwin, photographer.
    CREATED/PUBLISHED1937 Aug.
  • LOC covered4
    Covered4
    3/4 VIEW SHOWING APPROACH SPAN AND BRIDGE PORTAL (direction of view unknown) HAER, WVA,6-MILT
  • LOC covered4b
    4. INTERIOR VIEW SHOWING HOWE TRUSSING SYSTEM HAER, WVA,6-MILT,1-4
  • LOC covered4a
    2. SIDE VIEW OF BRIDGE (direction of view unknown) HAER, WVA,6-MILT,1-2
  • 1. Historic American Buildings Survey, Frederick Tilberg, Photographer August, 1950 PERSPECTIVE VIEW.HABS, PA,1-HUNTO.V,1-1
  • Covered Bridge, Glen Canyon, Santa Cruz County, CA
    MEDIUMPhoto(s): 1Photo Caption(s): 1
    CALL NUMBERHABS, CAL,44-GLECA,1-
    CREATED/PUBLISHEDDocumentation compiled after 1933.
    NOTESSurvey number HABS CA-1551
    Photocopy of photograph (Collection of Rose Rostran, Santa Cruz) Photographer unknown ca. 1936 END (Built 1892; moved to another site) HABS, CAL,44-GLECA,1-1
  • Autos on bridge w/ town behind
    Beam, George L. 1868-1935. (George Lytle),
    CREATED/PUBLISHED[between 1922 and 1935?]
    SUMMARYCars on a suspension bridge over a river, possibly in Colorado. Graffiti covers a concrete pylon; horses and houses are in the background.
    NOTESScanned image from loaned collection.
  • enz_bridge.jpg
  • Millennium Bridge
  • timbertruss
  • D&RG 5-span iron truss bridge #423A spanning the Grand (Colorado) River on the Montrose line at Grand Junction, Colorado / Geo. L. Beam.
    Beam, George L. 1868-1935. (George Lytle),
    CREATED/PUBLISHED1912?
    SUMMARYView west of an iron truss bridge crossing the Colorado River on the Denver and Rio Grande Railroad Montrose line at Grand Junction, Colorado; people and horses are on a sand bar.
    NOTESTitle hand-written on negative sleeve, with: "neg file no. 291," "view west," "new bridge #432.52, five 147'3 1/2" through pin-connected trusses on original stone piers and abutments, manufactured by American Bridge Co, erected on old masonry 1903-1904 by contractors McCreary & Willard," "argon - 3-4.5 s timer 1-2-3-5-6-7-8-10-11-13-15-16-18-20 on," and "print- J. L. Ozment - 9/9/1984."
    Source: Jackson Thode.
    Condition: negative emulsion pitted.
  • Meeker, Colorado
    CREATED/PUBLISHED1897.
    SUMMARYView of the bridge crossing the White River at Meeker on the Mesa and Flag Creek road. Men, women, a girl and a dog pose on the wooden truss bridge leading into Meeker, Rio Blanco County, Colorado.
    NOTESTitle and description typed on label on back of photoprint; additional information: "Which of the series of installations this is, is not known at this writing. Give credit as follows: Photo from the Wildhack Collection, Meeker Chamber of Commerce."
    Source: Gordon A. Weller, Meeker, Colo.
    Photoprint shows dirt specks of original and is wrinkling from label glued on back.
    SUBJECTS
  • Iowa Bridges Recording Project
    MEDIUMMeasured Drawing(s): 5Photo(s): 11Data Page(s): 14 plus cover pagePhoto Caption(s): 1
    CALL NUMBERHAER, IOWA,31-BERN.V,1-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
  • Arastra Gulch, Silverton, Colo.
    CREATED/PUBLISHED[between 1890 and 1910].
    SUMMARYView of a trestle bridge that crosses Arastra Gulch near Silverton (San Juan County), Colorado.
    NOTESTitle and "91381" from label in print.
    Stamped on back of print: "155B".
    Photoprint of a halftone reproduction of a photograph.
    Source: WHC- Caroline Bancroft Collection Transferred 8/89.
  • Jefferson Barracks BridgeLocation: Mississippi River, Jefferson Barracks, MissouriProject Type: BridgeOwner: Missouri DOT
  • aquaduct
  • Old stone bridge at Bull Run Battlefield. Manassas, Virginia.
    Carter, Paul, photographer.
    CREATED/PUBLISHED1936 Mar.
  • Bridges. Old stone bridge.
    Horydczak, Theodor, ca. 1890-1971, photographer.
    CREATED/PUBLISHEDca. 1920-ca. 1950.
  • Bridges. Stone bridge in Rock Creek Park.
    Horydczak, Theodor, ca. 1890-1971, photographer.
    CREATED/PUBLISHEDca. 1920-ca. 1950.
    NOTESOld negative number: 220.
  • Stone bridge, Elizabeth Park, Hartford, Ct..
    CREATED/PUBLISHEDc1905.
    NOTES"2172" on negative.
    Detroit Publishing Co. no. 018045.
    Gift; State Historical Society of Colorado; 1949
  • Old Stone Bridge, Boonton, N.J..
    CREATED/PUBLISHED[between 1890 and 1901]
    NOTESDate based on Detroit, Catalogue J (1901).
    Detroit Publishing Co. no. 011525.
    Gift; State Historical Society of Colorado; 1949
  • ALTERNATE TITLEStone BridgePennsylvania Historic Railroad Bridges Recording P
    Stone7
    Stone Bridge at Bowling Green, Gallatin vicinity, Sumner County, TN
  • segoviaspain.jpg
  • Historic American Buildings Survey Copy of old photo, by Frank O. Branzetti, Photographer (a) EXT.-STONE BRIDGE FORMERLY OVER CANAL, MEDFORD HABS, MASS,9-____,10-1
  • Franklin Park, Ellicott Bridge, Emerald Necklace, Boston, MA
    ALTERNATE TITLEWest Roxbury Park
    NOTESBuilding/structure/site dates: 1894; (completed)1894
    SUBJECTSUnited States--Massachusetts--Boston
  • 38pontdugard.jpg
  • Arch bridge, Bellows Falls, Vt..
    CREATED/PUBLISHED[between 1905 and 1910]
    NOTES"Saunderson" and "13" on negative.
    Detroit Publishing Co. no. 070090.
    Gift; State Historical Society of Colorado; 1949.
  • Bayonne Bridge, Spanning Kill Van Kull between Bayonne & Staten Is, Bayonne, Hudson County, NJ
    ALTERNATE TITLEKill van Kull Bridge
    MEDIUMPhoto(s): 20Data Page(s): 1 plus cover pagePhoto Caption(s): 2
    CALL NUMBERHAER, NJ,9-BAYO,1-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
  • [Hell Gate Bridge (New York Connecting RailroadBridge), New York].
    CREATED/PUBLISHED[between 1915 and 1920]
    NOTESTitle from jacket.
    Detroit Publishing Co. no. 0931.
    Gift; State Historical Society of Colorado; 1949. LOC
    HAER, NY,31-NEYO,176-5
  • [Upper] Steel Arch Bridge, Niagara.
    CREATED/PUBLISHED[between 1898 and 1899]
    NOTESDetroit Publishing Co. no. 04058.
    Gift; State Historical Society of Colorado; 1949.
  • bluewaterbridge
  • eads
  • Quebecinner
  • 1993, Lewis and Clark Bridge (Longview-Rainier Bridge) across the Columbia River.
    Photo taken from the Oregon side, looking northward.
    Photographer: Jet Long. Photograph Date: 1993.
    -- U.S. Library of Congress, American Memories Website, 2003
  • [Queensboro Bridge, Roosevelt Island, New York, N.Y.].
    CREATED/PUBLISHED[between 1910 and 1930]
    NOTESTitle devised by cataloger.
    Photograph of photographic print.
    No Detroit Publishing Co. no.
    Gift; State Historical Society of Colorado; 1949. LOC
  • Astoria bridge
  • tsingmabridge.jpg
    Tsing Ma Bridge, Hong Kong
  • akashi_kaikyo
    Today the suspension bridge reaches a free span of almost 2000m (Akashi-Kaikyo Bridge, Japan) while its cable-stayed counterpart can cross almost 1000m (Tatara Bridge, Japan, Normandie Bridge, France). Cable-supported bridges therefore play an important role in the overcoming of barriers that had split people, nations and even continents before. This cultural aspect is not less important.
  • brooklynbridge
  • http://www.ketchum.org/carquinez.html
  • Ambassadorbridge
  • ambassadorbridge2.jpg
  • GENERAL VIEW FROM TOP OF SOUTHERN TOWER, LOOKING NORTH HAER, CAL,38-SANFRA,140-46
    GENERAL VIEW, LOOKING NORTH, SHOWING THE 'SEA SIDE' OF THE STRUCTURE HAER, CAL,38-SANFRA,140-47
  • goldengate
  • DETAIL VIEW, LOOKING SOUTH, SHOWING CABLE, SUSPENDERS, LIGHTING FIXTURE AND BRIDGE DECK HAER, CAL,38-SANFRA,140-23
  • GENERAL VIEW, LOOKING NORTH, SHOWING THE BRIDGE IN BACKGROUND AND A 'SECTION' OF THE WIRE CABLES IN THE FOREGROUND HAER, CAL,38-SANFRA,140-42
    DETAIL VIEW OF CABLE SEAT ON TOP OF SOUTHERN TOWER HAER, CAL,38-SANFRA,140-45
  • DETAIL VIEW OF SUSPENDER AND FLOORBEAM HAER, CAL,38-SANFRA,140-35
  • When it opened in 1964, the Verrazano Narrows Bridge was the world's longest suspension span. Today, its length is surpassed only by the Humber Bridge in England.
  • When it opened in 1964, the Verrazano Narrows Bridge was the world's longest suspension span. Today, its length is surpassed only by the Humber Bridge in England.
  • Tacoma Narrows Bridge collapsing, Tacoma, Washington, 1940
    On the morning of November 7, 1940, the Tacoma Narrows Bridge twisted violently in 42-mile-per-hour winds and collapsed into the cold waters of the Puget Sound. The disaster -- which luckily took no human lives -- shook the engineering community and forever changed the way bridges were built around the world.
    Roadway of Tacoma Narrows Bridge twisting violently in a windstorm, Tacoma, Washington, 1940
  • Tacoma Narrows Bridge collapsing, Tacoma, Washington, 1940
    On the morning of November 7, 1940, the Tacoma Narrows Bridge twisted violently in 42-mile-per-hour winds and collapsed into the cold waters of the Puget Sound. The disaster -- which luckily took no human lives -- shook the engineering community and forever changed the way bridges were built around the world.
    Roadway of Tacoma Narrows Bridge twisting violently in a windstorm, Tacoma, Washington, 1940
  • Sunshine Skyway Bridge
    Sunshine Skyway Bridge, St. Petersburg and Bradenton, Floridahttp://www.pbs.org/wgbh/buildingbig/bridge/index.html
  • Sunshine Skyway Bridge
    Sunshine Skyway Bridge, St. Petersburg and Bradenton, Floridahttp://www.pbs.org/wgbh/buildingbig/bridge/index.html
  • Clark Bridge in Alton, IL photos by Bob Graul
  • Catalog swing bridge 2
  • Swing Bridge Turning
  • BRIDGE ACROSS SHATT-AL-ARAB, IRAQ
  • Coleman Bridge, Spanning Phelps Brook, on Windsor Bush Road, at th, Windsor, Berkshire County, MA
    ALTERNATE TITLEWindsor Bush Road Bridge
    MEDIUMMeasured Drawing(s): 4Photo(s): 10Data Page(s): 22 plus cover pagePhoto Caption(s): 1
    CALL NUMBERHAER, MASS,2-WIND,1-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
  • Coleman Bridge, Spanning Phelps Brook, on Windsor Bush Road, at th, Windsor, Berkshire County, MA
    ALTERNATE TITLEWindsor Bush Road Bridge
    MEDIUMMeasured Drawing(s): 4Photo(s): 10Data Page(s): 22 plus cover pagePhoto Caption(s): 1
    CALL NUMBERHAER, MASS,2-WIND,1-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
  • Coleman Bridge, Spanning Phelps Brook, on Windsor Bush Road, at th, Windsor, Berkshire County, MA
    ALTERNATE TITLEWindsor Bush Road Bridge
    MEDIUMMeasured Drawing(s): 4Photo(s): 10Data Page(s): 22 plus cover pagePhoto Caption(s): 1
    CALL NUMBERHAER, MASS,2-WIND,1-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
  • Elevated train crossing Van Buren Street Railroad Bridge].
    Chicago Daily News, Inc., photographer.
    CREATED/PUBLISHED[ca. 1902]
    SUMMARYView of an elevated train crossing the Van Buren Street Railroad Bridge which spanned the Chicago River from the Loop to the Near West Side community area in Chicago, Illinois.
    NOTESThis photonegative taken by a Chicago Daily News photographer may have been published in the newspaper.
    Cite as: DN-0000001, Chicago Daily News negatives collection, Chicago Historical Society.
  • [Bascule bridge with left half slightly raised, with people on bridge].
    Chicago Daily News, Inc., photographer.
    CREATED/PUBLISHED[ca. 1902]
    SUMMARYView of a bascule bridge over the Chicago River in Chicago, Illinois. A bridgekeeper's house is visible in the foreground.
    NOTESThis photonegative taken by a Chicago Daily News photographer may have been published in the newspaper.
    Cite as: DN-0000006, Chicago Daily News negatives collection, Chicago Historical Society.
  • [Erie Street Bridge, a bascule bridge, with the two leaves in raised position].
    Chicago Daily News, Inc., photographer.
    CREATED/PUBLISHED1910.
    SUMMARYView of the Erie Street Bridge, a bascule bridge over the North Branch of the Chicago River, in raised position. The Erie Street Bridge connected the Near North Side and West Town community areas of Chicago, Illinois.
    NOTESThis photonegative taken by a Chicago Daily News photographer may have been published in the newspaper.
    Cite as: DN-0008116, Chicago Daily News negatives collection, Chicago Historical Society.
  • saultstmarie1
  • ALTERNATE TITLEErie Avenue BridgeNewberry Bridge
    MEDIUMPhoto(s): 42Data Page(s): 21 plus cover pagePhoto Caption(s): 3
    CALL NUMBERHAER, PA,41-WILPO,3-
    CREATED/PUBLISHEDDocumentation compiled after 1968.LOC
  • Vertical lift Baltimore (Pratt) through-truss railroad bridge
    www.richmangalleries.com/ moving_bridges.htm
    Cape Cod Canal Railroad Bridge
    Buzzards Bay, Massachusetts
    Vertical Lift
    Scotland Vertical Bridge
    ID Number12269DescriptionLeamington Lift Bridge Date taken 21 May 2000PhotographerKlaus Föhl
  • Vertical lift Baltimore (Pratt) through-truss railroad bridge
    www.richmangalleries.com/ moving_bridges.htm
    Cape Cod Canal Railroad Bridge
    Buzzards Bay, Massachusetts
    Vertical Lift
    Scotland Vertical Bridge
    ID Number12269DescriptionLeamington Lift Bridge Date taken 21 May 2000PhotographerKlaus Föhl
  • Vertical lift Baltimore (Pratt) through-truss railroad bridge
    www.richmangalleries.com/ moving_bridges.htm
    Cape Cod Canal Railroad Bridge
    Buzzards Bay, Massachusetts
    Vertical Lift
    Scotland Vertical Bridge
    ID Number12269DescriptionLeamington Lift Bridge Date taken 21 May 2000PhotographerKlaus Föhl
  • Goethals Bridge, Spanning Arthur Kill from New Jersey to Staten Isl, Staten Island, Richmond County, NY
    MEDIUMPhoto(s): 7Photo Caption(s): 1
    CALL NUMBERHAER, NY,43-___,2-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
    NOTESSurvey number HAER NY-305
  • Goethals Bridge, Spanning Arthur Kill from New Jersey to Staten Isl, Staten Island, Richmond County, NY
    MEDIUMPhoto(s): 7Photo Caption(s): 1
    CALL NUMBERHAER, NY,43-___,2-
    CREATED/PUBLISHEDDocumentation compiled after 1968.
    NOTESSurvey number HAER NY-305
  • GUIABA RIVER AT PORTO ALEGRE, BRAZIL
    (1954-60)
  • Lift-bridge
  • Aerial bridge, Duluth, Minn..
    CREATED/PUBLISHEDc1908.
    NOTESNegative broken and taped to second sheet of glass.
    Detroit Publishing Co. no. 070603.
    Gift; State Historical Society of Colorado; 1949. LOC
  • Tank destroyer advances along a mountain road, Italy
    CREATED/PUBLISHEDMarch 3, 1945.
    SUMMARYThree soldiers of the 701st Tank Destroyer Battalion advance a tank destroyer mounted with three inch guns along a mountain road located, according to the caption, in the Mount Terminale area. The 701st was attached to the Tenth Mountain Division during the Italian Campaign. In the background are shelled buildings, a partially completed Bailey bridge, with five soldiers standing on it, as well as (according to the caption) a Sherman tank out of action.
    NOTESFor physical location, see Photograph Album 15A, Walter L. Galson, or Andrew Hastings Oversized Prints number 67.
    Signal Corps negative number SC 329838
    Vintage photographic print.
    Unmounted photographic print has caption: "The tank destroyer of the 701 Tank Destroyer Battalion, mounting three-inch guns advances along a mountain road in support of the 10th Mountain Div., which is pushing north from Poretta toward the Po Valley. In the background are a half-finished Bailey bridge, called according to the caption the Malandrone bridge, and a Sherman tank out of action. U.S. Fifth Army, Mount Terminale area, Italy." Date typed on reverse.
    Mounted photoprint has caption: "701st TD Bn. pushes past 126th at Malandrone bridge." Date and Signal Corps negative number handwritten on the board beneath the print.
    Title supplied by cataloger.
  • baileybridge
  • Bailey-push
  • brcko.counterpart.org/ brckophotos.htm
    Border Bridge over Sava River to Croatia .jpg 19kb
  • View of James River Pontoon Bridge, from south side, above Jones' Landing. [Stereograph]
    CREATED/PUBLISHED[ca.1861-ca.1865]
    MEDIUMStereograph
    SUMMARYPontoon bridge across river, man standing in middle.
    NOTESSeries: Photographic History. The War for the Union. War Views., 2538
  • Pontoon bridges, North Anna, constructed by the 50th N.Y.V. Engineers, below railroad bridge, where a portion of the 2nd Corps, under Gen. Hancock crossed 23rd May, 1864. [Stereograph]
    O'Sullivan, Timothy H., 1840-1882
    CREATED/PUBLISHEDMay 23, 1864
    MEDIUMStereograph
    SUMMARYTwo pontoon bridges span North Anna River, two men seated on far bridge.
    NOTESSeries: Photographic Incidents of the War., 765
  • Broadway Landing, Va. Pontoon bridge across the Appomattox].
    CREATED/PUBLISHED[Between 1860 and 1865]
    SUMMARYPhotograph from the main eastern theater of war, the siege of Petersburg, June 1864-April 1865.
    NOTESReference: Civil War photographs, 1861-1865 / compiled by Hirst D. Milhollen and Donald H. Mugridge, Washington, D.C. : Library of Congress, 1977. No. 0369
    Title from Milhollen and Mugridge.
    Two plates form left (LC-B811-2625A) and right (LC-B811-2625B) halves of a stereograph pair.
    Forms part of Selected Civil War photographs, 1861-1865 (Library of Congress)
  • The official name of the bridge is the Governor Albert D. Rosellini Bridge at Evergreen Point, after a popular former governor who was in office when the bridge opened.
  • [Stony Brook glen, Shawmut Bridge, Dansville, N.Y.].
    CREATED/PUBLISHED[between 1890 and 1906]
    NOTESTitle and date from Detroit, Catalogue P (1906).
    Detroit Publishing Co. no. 011497.
    Gift; State Historical Society of Colorado; 1949
  • Knie_bridge
  • Lake_Pontchartrain_Causeway-vi.jpg
  • pontchbridge-vi
    Combined bridge – truss, cantilever - Put in Other category
  • clarkbrdgeold
  • Bridge project

    1. 1. BRIDGESBRIDGES Engineer-It ClassEngineer-It Class Summer 2004Summer 2004
    2. 2. HistoryHistory • Primitive Peoples:Primitive Peoples: – LogsLogs – Slabs of RocksSlabs of Rocks – Intertwined Vines or RopesIntertwined Vines or Ropes • Roman Empire—First Great Bridge BuildersRoman Empire—First Great Bridge Builders – Timber Truss BridgesTimber Truss Bridges – Masonry Arch BridgesMasonry Arch Bridges • EuropeansEuropeans – Followed HRE Until Iron and Steel UseFollowed HRE Until Iron and Steel Use • Nineteenth Century—Nineteenth Century— – Modern Long BridgesModern Long Bridges – Moveable BridgesMoveable Bridges
    3. 3. Rock BridgesRock Bridges
    4. 4. Wadi Rum Rock Bridge
    5. 5. View under Rainbow Bridge, a massive sandstone bridge in Natural Bridges National Monument, Utah, includes a dried up streambed. "Rainbow Bridge, Utah."
    6. 6. Rope BridgesRope Bridges
    7. 7. Log BridgesLog Bridges
    8. 8. LOG BRIDGELOG BRIDGE Members of a DenverMembers of a Denver and Salt Lake Railroadand Salt Lake Railroad Company (D&SL)Company (D&SL) survey crew pose on asurvey crew pose on a loglog bridgebridge over theover the Colorado River in GoreColorado River in Gore Canyon (GrandCanyon (Grand County), Colorado.County), Colorado.
    9. 9. View of a settlement in (probably) Utah; shows a log bridge, a stream, and houses. People sit on a porch; a United States flag waves from a pole.
    10. 10. U.S. Army soldiers from the Ohio Engineers, building a small log bridge over a ditch, at Fort Sheridan, Illinois
    11. 11. LOG BRIDGELOG BRIDGEView of hot springs site enclosed by stone andView of hot springs site enclosed by stone and wooden frame buildings, Hot Sulphur Springs, COwooden frame buildings, Hot Sulphur Springs, CO
    12. 12. Covered BridgesCovered Bridges
    13. 13. COVEREDCOVERED BRIDGEBRIDGE • Bridges. OldBridges. Old covered bridge,covered bridge, Jackson River,Jackson River, Va.Va.
    14. 14. Structure of covered bridge. Wallingford, Vermont
    15. 15. Covered Bridge, Glen Canyon, Santa Cruz County, CA
    16. 16. CONSTRUCTIONCONSTRUCTION • Must carry own weight and weight of trafficMust carry own weight and weight of traffic – Must withstand force of high windsMust withstand force of high winds – Must consider effects of contraction and/orMust consider effects of contraction and/or – Expansion due to temperature changesExpansion due to temperature changes – Most common materialsMost common materials • Wood—temporaryWood—temporary • Steel—for long, strong spansSteel—for long, strong spans • Reinforced concrete—attractive designs but difficult to workReinforced concrete—attractive designs but difficult to work with on large bridgeswith on large bridges • Prestressed concrete—stronger than reinforced, cheaperPrestressed concrete—stronger than reinforced, cheaper than steelthan steel
    17. 17. TYPES OF BRIDGESTYPES OF BRIDGES • FixedFixed • MoveableMoveable • OtherOther
    18. 18. Beam or Girder BridgesBeam or Girder Bridges
    19. 19. FIXEDFIXED • Beam or GirderBeam or Girder – Two parallel beams w/ flooring supported byTwo parallel beams w/ flooring supported by pierspiers – Span can be supported by trestleSpan can be supported by trestle – Used for hwy over/underpasses or smallUsed for hwy over/underpasses or small stream crossingsstream crossings – Example—Covered BridgeExample—Covered Bridge
    20. 20. Cars on a suspension bridge over a river, possibly in Colorado.
    21. 21. enz_bridge.jpg
    22. 22. Millennium Bridge, LondonMillennium Bridge, London
    23. 23. ostruz.jpg www.prevodi-vertalingen.com/.../ ostruz.html
    24. 24. Truss BridgesTruss Bridges
    25. 25. FIXEDFIXED • TrussTruss – Beam bridge strengthed by trusses (structuralBeam bridge strengthed by trusses (structural spts joined to form triangles with tie rods)spts joined to form triangles with tie rods) – Lighter than ordinary beam sections of equalLighter than ordinary beam sections of equal lengthlength – Useful for longer bridgesUseful for longer bridges
    26. 26. Timber Truss BridgeTimber Truss Bridge
    27. 27. Continuous Truss BridgesContinuous Truss Bridges
    28. 28. View west of an iron truss bridge crossing the Colorado River on the Denver and Rio Grande Railroad Montrose line at Grand Junction, Colorado; people and horses are on a sand bar.
    29. 29. View of the bridge crossing the White River at Meeker, CO
    30. 30. White Water Creek Bridge, Spanning White Water Creek, Bernard vicinity, Dubuque County, IA
    31. 31. Truss BridgeTruss Bridge View of a trestle bridge that crosses Arastra Gulch near Silverton (San Juan County), Colorado.
    32. 32. Jefferson Barracks Bridge Location: Mississippi River, Jefferson Barracks, Missouri
    33. 33. Simple Truss BridgesSimple Truss Bridges
    34. 34. FAI 24 Bridge Over the Ohio River Paducah, Kentucky www.modjeski.com/projects/ servproj/paducah.htm
    35. 35. gcdranet.homelinux.com/davehonan/ bridges/il.html Cairo
    36. 36. Ohio River ferry and railroad bridge, Metropolis, IL
    37. 37. Arch BridgesArch Bridges
    38. 38. FIXEDFIXED • ArchArch – One or more archesOne or more arches – Masonry, reinforced concrete or steelMasonry, reinforced concrete or steel – Roadway on toop of arches or suspended byRoadway on toop of arches or suspended by cablescables – Spans can be longer than beam or trussSpans can be longer than beam or truss
    39. 39. AquaductAquaduct
    40. 40. Old stone bridge at Bull Run Battlefield. Manassas, Virginia.
    41. 41. Stone bridge in Rock Creek Park.
    42. 42. Stone bridge, Elizabeth Park, Hartford, Ct..
    43. 43. Old Stone Bridge, Boonton, N.J..
    44. 44. Stone Bridge at Bowling Green, Gallatin vicinity, Sumner County, TN
    45. 45. Segovia, Spain
    46. 46. Franklin Park, Ellicott Bridge, Emerald Necklace, Boston, MA
    47. 47. Pont du GardPont du Gard
    48. 48. Arch bridge, Bellows Falls, Vt..
    49. 49. Bayonne Bridge, Spanning Kill Van Kull between Bayonne & Staten Is, Bayonne, Hudson County, NJ
    50. 50. Kill van Kull Bridge
    51. 51. [Hell Gate Bridge (New York Connecting RailroadBridge), New York].
    52. 52. [Hell Gate Bridge (New York Connecting RailroadBridge), New York].
    53. 53. Steel Arch Bridge, Niagara.Steel Arch Bridge, Niagara.
    54. 54. http://www.brokk.com/images/jpg/sando.jpg
    55. 55. Sydney, Australia
    56. 56. www.bardaglea.org.uk/.../ bridge-types-arch.html Arches can also be set above the deck as on the Sydney harbour bridge in Australia. This allows much more space beneath for ships to pass under.
    57. 57. Blue Water Bridge Blue Water Bridges are a major international crossing over the St. Clair river at the southern end of Lake Huron
    58. 58. Eads Bridge, St. Louis
    59. 59. Port Mann Bridge, Coquitlam-Surrey BC This graceful steel arch, once the third-longest of its kind in the world, carries the Trans-Canada highway across the Fraser River. In 2002 its capacity was increased with the addition of an eastbound high occupancy vehicle (HOV) lane, bringing the total to five www.balsabridge.com/ bridge-van.htm
    60. 60. Cantilever BridgesCantilever Bridges
    61. 61. FIXEDFIXED • CantileverCantilever • Double-ended brackets supporting aDouble-ended brackets supporting a center spancenter span • Shore end of each cantilever firmlyShore end of each cantilever firmly anchoredanchored • Center supported by pierCenter supported by pier
    62. 62. Quebec Bridge
    63. 63. Quebec Bridge
    64. 64. Quebec Bridge
    65. 65. Quebec Bridge
    66. 66. Quebec Bridge
    67. 67. Quebec Bridge
    68. 68. Quebec Bridge On June 15, 1907 an inspecting engineer noted that two girders of the anchor was misaligned by a quarter of an inch.  Cooper called this a "not serious" problem.  In the inspection report in August, 1907, it was noted that the girders had moved out alignment a bit more and "appeared bent".  Although this condition was a bit more concerning, the work continued.
    69. 69. Scotland's Firth of Forth A period museum photo shows cranes atop the massive structure. The bridge was constructed from 1882-1890, 2.5 KM (1.5 miles) across Scotland's Firth of Forth.  Note reflection of photographer from glass frame.  http://www.pre-engineering.com/resources/forth/forthbridge.htm
    70. 70. http://www.brantacan.co.uk/cantilever.htm
    71. 71. Lewis and Clark Bridge (Longview-Rainier Bridge) across the Columbia River.
    72. 72. [Queensboro Bridge, Roosevelt Island, New York, N.Y.].
    73. 73. Astoria bridge
    74. 74. Suspension BridgesSuspension Bridges
    75. 75. FIXEDFIXED • SuspensionSuspension – Roadway hangs from vertical cables supported byRoadway hangs from vertical cables supported by overhead cables strung between two or more towersoverhead cables strung between two or more towers – Longest spansLongest spans – CostlyCostly – Difficult to designDifficult to design – Highly susceptible to winds and swayingHighly susceptible to winds and swaying – Cables can be up to three feet in diameterCables can be up to three feet in diameter
    76. 76. Tanana River suspension bridge. http://tapseis.anl.gov/guide/photo/Tanana_Bridge.html
    77. 77. Tsing Ma Bridge, Hong Kong
    78. 78. Akashi-Kaikyo Bridge, JapanAkashi-Kaikyo Bridge, Japan
    79. 79. Brooklyn BridgeBrooklyn Bridge
    80. 80. The 3rd Carquinez Strait Bridge will replace the original bridge that was built in 1927.
    81. 81. Ambassador BridgeAmbassador Bridge
    82. 82. Ambassador BridgeAmbassador Bridge
    83. 83. Golden Gate BridgeGolden Gate Bridge
    84. 84. Golden GateGolden Gate StructuresStructures
    85. 85. When it opened in 1964, the Verrazano Narrows Bridge was the world's longest suspension span. Today, its length is surpassed only by the Humber Bridge in England.
    86. 86. Verrazano
    87. 87. Tacoma Narrows Bridge collapsing, Tacoma, Washington, 1940 On the morning of November 7, 1940, the Tacoma Narrows Bridge twisted violently in 42-mile-per- hour winds and collapsed into the cold waters of the Puget Sound. The disaster -- which luckily took no human lives -- shook the engineering community and forever changed the way bridges were built around the world. Roadway of Tacoma Narrows Bridge twisting violently in a windstorm, Tacoma, Washington, 1940
    88. 88. Cable-Stayed BridgesCable-Stayed Bridges
    89. 89. FIXEDFIXED • Cable-StayedCable-Stayed • Suspended by cables that run directlySuspended by cables that run directly down to roadway from central towersdown to roadway from central towers • Less costly than suspensionLess costly than suspension • Quickly constructableQuickly constructable • Spans must be limited in lengthSpans must be limited in length
    90. 90. Sunshine Skyway Bridge, St. Petersburg and Bradenton, Florida
    91. 91. Sunshine Skyway Bridge, St. Petersburg and Bradenton, Florida
    92. 92. Clark Bridge in Alton, ILClark Bridge in Alton, IL
    93. 93. Clark Bridge in Alton, ILClark Bridge in Alton, IL
    94. 94. Clark Bridge in Alton, ILClark Bridge in Alton, IL
    95. 95. Dames Port Florida
    96. 96. Dames Port Florida
    97. 97. Dames Port Florida
    98. 98. Swing BridgesSwing Bridges
    99. 99. MOVEABLEMOVEABLE • SwingSwing • Central span turned 90 degrees on pivotCentral span turned 90 degrees on pivot pier placed in middle of waterwaypier placed in middle of waterway • Double swing possibleDouble swing possible
    100. 100. Catalog AdvertisementCatalog Advertisement
    101. 101. Moveable BridgeMoveable Bridge
    102. 102. BRIDGE ACROSS SHATT-AL-ARAB, IRAQBRIDGE ACROSS SHATT-AL-ARAB, IRAQ
    103. 103. Detail of south truss showing truss configuration and connections HAER, MASS,2-WIND,1-3
    104. 104. Detail of south truss showing truss configuration and connections HAER, MASS,2-WIND,1-3
    105. 105. Coleman Bridge, Spanning Phelps Brook, on Windsor Bush Road, at th, Windsor, Berkshire County, MA
    106. 106. Bascule BridgesBascule Bridges
    107. 107. MOVEABLEMOVEABLE • BasculeBascule – One or two sections not supported by piersOne or two sections not supported by piers – Balanced on one end by counterweightsBalanced on one end by counterweights – Section jackknifes up to allow passage ofSection jackknifes up to allow passage of shipsships – Most common type of highway drawbridgeMost common type of highway drawbridge
    108. 108. View of an elevated train crossing the Van Buren Street Railroad Bridge which spanned the Chicago River from the Loop to the Near West Side community area in Chicago, Illinois.
    109. 109. View of a bascule bridge over the Chicago River in Chicago, Illinois.
    110. 110. Haarlem old lifting bridge. Lifting bridges are moveable bridges which enable boats to pass. They vary from simple wooden designs such as many seen in the Netherlands to large steel structures which carry heavy roads such as the bascule bridge in Docklands.
    111. 111. Erie Street Bridge, a bascule bridge, with the two leaves in raisedErie Street Bridge, a bascule bridge, with the two leaves in raised positionposition
    112. 112. Sault Ste. Marie International Bridge
    113. 113. Erie Avenue Bridge Newberry Bridge
    114. 114. Vertical Lift BridgesVertical Lift Bridges
    115. 115. MOVEABLEMOVEABLE • Vertical LiftVertical Lift – Central span extends between two towersCentral span extends between two towers – Balanced by counterweightsBalanced by counterweights – Variation of this type is bridge over Shatt-al-Variation of this type is bridge over Shatt-al- arab River in Iraq—Roadway sinks into waterarab River in Iraq—Roadway sinks into water to allow ships to pass over itto allow ships to pass over it
    116. 116. Vertical lift Baltimore (Pratt) through-truss railroad bridge
    117. 117. Cape Cod Canal Railroad Bridge Buzzards Bay, Massachusetts
    118. 118. Leamington Lift Bridge, Scotland
    119. 119. Goethals Bridge, Spanning Arthur Kill from New Jersey to Staten Isl, Staten Island, Richmond County, NY
    120. 120. Goethals Bridge, Spanning Arthur Kill from New Jersey to Staten Isl, Staten Island, Richmond County, NY
    121. 121. GUIABA RIVER AT PORTO ALEGRE, BRAZIL
    122. 122. The vertical lift bridge that carries US-41 across the Portage Canal.
    123. 123. Aerial bridge, Duluth, Minn..
    124. 124. Aerial bridge, Duluth, Minn..
    125. 125. Aerial bridge, Duluth, Minn..
    126. 126. Bailey BridgesBailey Bridges
    127. 127. OTHEROTHER • BaileyBailey – Small truss bridge made in sectionsSmall truss bridge made in sections – Assembled on shoreAssembled on shore – Pushed out from shore to cover spanPushed out from shore to cover span – Transportable to new sitesTransportable to new sites
    128. 128. BaileyBailey Tank destroyer advances along a mountain road, Italy
    129. 129. Pontoon BridgesPontoon Bridges
    130. 130. OTHEROTHER • PontoonPontoon – Floats on waterFloats on water – Can be disassembled and moved to new siteCan be disassembled and moved to new site – Supported by pontoons or bargesSupported by pontoons or barges
    131. 131. The U.S. Army's Sava River bridge is taken apart at nightfall and put together in the morning
    132. 132. View of James River Pontoon Bridge, from south side, above Jones' Landing.
    133. 133. Pontoon bridges, North Anna, constructed by the 50th N.Y.V. Engineers, below railroad bridge, where a portion of the 2nd Corps, under Gen. Hancock crossed 23rd May, 1864
    134. 134. Broadway Landing, Va. Pontoon bridge across the Appomattox
    135. 135. Evergreen Floating BridgeEvergreen Floating Bridge
    136. 136. Evergreen Bridge. The official name of the bridge is the Governor Albert D. Rosellini Bridge at Evergreen Point, after a popular former governor who was in office when the bridge opened.
    137. 137. Combined BridgesCombined Bridges
    138. 138. [Stony Brook glen, Shawmut Bridge, Dansville, N.Y.].
    139. 139. Knie_bridge
    140. 140. Lake_Pontchartrain_Causeway-vi.jpg
    141. 141. Lake_Pontchartrain_Causeway-vi.jpg
    142. 142. Old Alton Bridge
    143. 143. Name that BridgeName that Bridge Give the type for each.Give the type for each.

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