Applications ofAccess Management    in Alabama          Jeff Stephenson, PE, PTOE          Scott Cothron, PE              ...
Southern District ITE 2009 Annual Meeting - Birmingham, AL
Evolution of Access Management in AL   ITE Service Project    Introduction to    Principles of Access    Management    Sh...
Evolution of Access Management in AL   Specific projects to address access management    (ongoing)                       ...
Evolution of Access Management in AL   Development of Statewide Access Management    Policy (expected to start this summe...
Evolution of Access Management in AL   ITE Service Project Introduction to Principles of Access    Management short cours...
EDUCATION    Southern District ITE 2009 Annual Meeting - Birmingham, AL
What is Access Management?   The planning, design, and implementation of    various land use and transportation    strate...
In other words…   Controlling the location, type, and design of    driveways and public streets along a primary    roadwa...
Roadway Life Cycle                                 Arterial                                Improved      Deteriorated     ...
Effects of Poor Access Management   Congestion, possible gridlock   Frustrated drivers   Frequent traffic crashes   Co...
Benefits of Access Management   Preserves street capacity   Reduces traffic crashes   Preserves value of adjacent prope...
Access Management Techniques   Increase spacing between signals,    intersections, and median openings   Careful attenti...
In today’s world…   Existing road system is    congested, but highway    construction funding is    shrinking   Need to ...
Why manage access?   Access management is the key to preserving    the traffic movement function of an arterial    roadwa...
Opportunities for Access Management   Designing a new roadway   Widening an existing roadway   Retrofitting an existing...
ENGINEERING     Southern District ITE 2009 Annual Meeting - Birmingham, AL
Widening an existing roadway   EXAMPLE:    SR-181 Baldwin County                      Southern District ITE 2009 Annual M...
Southern District ITE 2009 Annual Meeting - Birmingham, AL
Traffic Signal Spacing   55 mph design speed   Signal spacing at 2,600 feet or one-half mile                            ...
Median Opening Spacing   55 mph design speed   1,300 feet, measured from the center of openings    along the travel way ...
Driveway Spacing   55 mph design speed   Spacing of 660 feet for a median divided section and    500 feet for a five lan...
Grouped Parcels                  Southern District ITE 2009 Annual Meeting - Birmingham, AL
Retrofitting an existing roadway   EXAMPLE:    SR-160 Blount County    Hayden, AL                      Southern District ...
Southern District ITE 2009 Annual Meeting - Birmingham, AL
3 schools located                within ½ mile             2 of those schools have             direct access to SR-160    ...
CONGESTION!!               Southern District ITE 2009 Annual Meeting - Birmingham, AL
Existing Traffic FlowHayden Elementary SchoolHayden Middle SchoolHayden High School                 BUS FLOW SEPARATE     ...
Proposed Traffic FlowHayden Elementary SchoolHayden Middle SchoolHayden High School                                       ...
SR-160 @ Bent Tree – Improvements                 Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-160 @ Bent Tree – Increased Radius                  Southern District ITE 2009 Annual Meeting - Birmingham, AL
Retrofitting an existing roadway   EXAMPLE:    SR-21 Calhoun County    Oxford, AL                      Southern District ...
Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - Plaza Lane to I-20 EB Ramps                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - Plaza Lane to I-20 EB Ramps                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - I-20 EB Ramps to Recreation Drive                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - I-20 EB Ramps to Recreation Drive                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - Recreation Drive to US-78                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - Recreation Drive to US-78                   Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - US-78 to Snow Street                  Southern District ITE 2009 Annual Meeting - Birmingham, AL
SR-21 - US-78 to Snow Street                  Southern District ITE 2009 Annual Meeting - Birmingham, AL
Accommodating development   EXAMPLE:    Cobbs Ford Road    Prattville, AL      Cobbs Ford Road                        Sou...
Southern District ITE 2009 Annual Meeting - Birmingham, AL
Cobbs Ford Road (BEFORE)                 Southern District ITE 2009 Annual Meeting - Birmingham, AL
Cobbs Ford Road (AFTER)                  Southern District ITE 2009 Annual Meeting - Birmingham, AL
ENFORCEMENT     Southern District ITE 2009 Annual Meeting - Birmingham, AL
Southern District ITE 2009 Annual Meeting - Birmingham, AL
Enforcement of Access Management Plans   Up to MUNICIPALITIES to enforce    –   this is why it is so important for them t...
What’s next for Alabama?   ALDOT will be working to develop a    Statewide Access Management Policy Manual               ...
How did your state do it?      Southern District ITE 2009 Annual Meeting - Birmingham, AL
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Applications of Access Management in Alabama by Jeff Stephenson & Scott Cothron

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Applications of Access Management in Alabama by Jeff Stephenson & Scott Cothron

  1. 1. Applications ofAccess Management in Alabama Jeff Stephenson, PE, PTOE Scott Cothron, PE Southern District ITE 2009 Annual Meeting Birmingham, AL
  2. 2. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  3. 3. Evolution of Access Management in AL ITE Service Project Introduction to Principles of Access Management Short course taught regionally in Alabama (2004) Southern District ITE 2009 Annual Meeting - Birmingham, AL
  4. 4. Evolution of Access Management in AL Specific projects to address access management (ongoing) Cobbs Ford Road Southern District ITE 2009 Annual Meeting - Birmingham, AL
  5. 5. Evolution of Access Management in AL Development of Statewide Access Management Policy (expected to start this summer) Southern District ITE 2009 Annual Meeting - Birmingham, AL
  6. 6. Evolution of Access Management in AL ITE Service Project Introduction to Principles of Access Management short course taught regionally in Alabama (2004) EDUCATION Specific projects to address access management (ongoing) ENGINEERING Development of Statewide Access Management Policy (expected to start this summer) ENFORCEMENT Southern District ITE 2009 Annual Meeting - Birmingham, AL
  7. 7. EDUCATION Southern District ITE 2009 Annual Meeting - Birmingham, AL
  8. 8. What is Access Management? The planning, design, and implementation of various land use and transportation strategies to maintain traffic flow and safety along a primary roadway, while still considering access needs of various land uses and development types. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  9. 9. In other words… Controlling the location, type, and design of driveways and public streets along a primary roadway to provide an adequate balance between traffic movement and access. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  10. 10. Roadway Life Cycle Arterial Improved Deteriorated Increased Level of Service Accessibility More Traffic Higher Land Conflicts Values Increased Changed Traffic Land Use Southern District ITE 2009 Annual Meeting - Birmingham, AL
  11. 11. Effects of Poor Access Management Congestion, possible gridlock Frustrated drivers Frequent traffic crashes Continuous strip development Decreased property values Commercial establishments struggling to survive Complaints about congestion, noise, safety Pressure on government to improve streets Southern District ITE 2009 Annual Meeting - Birmingham, AL
  12. 12. Benefits of Access Management Preserves street capacity Reduces traffic crashes Preserves value of adjacent property Manages congestion Southern District ITE 2009 Annual Meeting - Birmingham, AL
  13. 13. Access Management Techniques Increase spacing between signals, intersections, and median openings Careful attention to driveway location, spacing, and design Exclusive turning lanes Median treatments/channelization Service and frontage roads Shared access Southern District ITE 2009 Annual Meeting - Birmingham, AL
  14. 14. In today’s world… Existing road system is congested, but highway construction funding is shrinking Need to protect and better utilize our existing road system Southern District ITE 2009 Annual Meeting - Birmingham, AL
  15. 15. Why manage access? Access management is the key to preserving the traffic movement function of an arterial roadway!!! It’s a reasonable trade-off between providing service to a property (development) and servicing traffic (roadway). Southern District ITE 2009 Annual Meeting - Birmingham, AL
  16. 16. Opportunities for Access Management Designing a new roadway Widening an existing roadway Retrofitting an existing roadway Accommodating development along an existing roadway Southern District ITE 2009 Annual Meeting - Birmingham, AL
  17. 17. ENGINEERING Southern District ITE 2009 Annual Meeting - Birmingham, AL
  18. 18. Widening an existing roadway EXAMPLE: SR-181 Baldwin County Southern District ITE 2009 Annual Meeting - Birmingham, AL
  19. 19. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  20. 20. Traffic Signal Spacing 55 mph design speed Signal spacing at 2,600 feet or one-half mile Southern District ITE 2009 Annual Meeting - Birmingham, AL
  21. 21. Median Opening Spacing 55 mph design speed 1,300 feet, measured from the center of openings along the travel way Southern District ITE 2009 Annual Meeting - Birmingham, AL
  22. 22. Driveway Spacing 55 mph design speed Spacing of 660 feet for a median divided section and 500 feet for a five lane (center turn lane) section Southern District ITE 2009 Annual Meeting - Birmingham, AL
  23. 23. Grouped Parcels Southern District ITE 2009 Annual Meeting - Birmingham, AL
  24. 24. Retrofitting an existing roadway EXAMPLE: SR-160 Blount County Hayden, AL Southern District ITE 2009 Annual Meeting - Birmingham, AL
  25. 25. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  26. 26. 3 schools located within ½ mile 2 of those schools have direct access to SR-160 Hayden High School Hayden Middle School 4th school openedHayden Elementary School 2007-2008 ½ mile to east Southern District ITE 2009 Annual Meeting - Birmingham, AL
  27. 27. CONGESTION!! Southern District ITE 2009 Annual Meeting - Birmingham, AL
  28. 28. Existing Traffic FlowHayden Elementary SchoolHayden Middle SchoolHayden High School BUS FLOW SEPARATE NORTHBuses FROM VEHICLE FLOW iv e e Dr re n tT Be d Ro a o od Atw SRO ad SRO Ro ry er sF an De Southern District ITE 2009 Annual Meeting - Birmingham, AL
  29. 29. Proposed Traffic FlowHayden Elementary SchoolHayden Middle SchoolHayden High School NORTH START TWO-LANEBuses ONE-WAY (W/ GUIDE SIGNAGE) iv e e Dr WIDEN ROAD re IN CURVE n tT Be d Ro a o od Atw SRO ad SRO Ro ry er TURN LANES, sF INCREASE RADIUS an De Southern District ITE 2009 Annual Meeting - Birmingham, AL
  30. 30. SR-160 @ Bent Tree – Improvements Southern District ITE 2009 Annual Meeting - Birmingham, AL
  31. 31. SR-160 @ Bent Tree – Increased Radius Southern District ITE 2009 Annual Meeting - Birmingham, AL
  32. 32. Retrofitting an existing roadway EXAMPLE: SR-21 Calhoun County Oxford, AL Southern District ITE 2009 Annual Meeting - Birmingham, AL
  33. 33. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  34. 34. SR-21 - Plaza Lane to I-20 EB Ramps Southern District ITE 2009 Annual Meeting - Birmingham, AL
  35. 35. SR-21 - Plaza Lane to I-20 EB Ramps Southern District ITE 2009 Annual Meeting - Birmingham, AL
  36. 36. SR-21 - I-20 EB Ramps to Recreation Drive Southern District ITE 2009 Annual Meeting - Birmingham, AL
  37. 37. SR-21 - I-20 EB Ramps to Recreation Drive Southern District ITE 2009 Annual Meeting - Birmingham, AL
  38. 38. SR-21 - Recreation Drive to US-78 Southern District ITE 2009 Annual Meeting - Birmingham, AL
  39. 39. SR-21 - Recreation Drive to US-78 Southern District ITE 2009 Annual Meeting - Birmingham, AL
  40. 40. SR-21 - US-78 to Snow Street Southern District ITE 2009 Annual Meeting - Birmingham, AL
  41. 41. SR-21 - US-78 to Snow Street Southern District ITE 2009 Annual Meeting - Birmingham, AL
  42. 42. Accommodating development EXAMPLE: Cobbs Ford Road Prattville, AL Cobbs Ford Road Southern District ITE 2009 Annual Meeting - Birmingham, AL
  43. 43. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  44. 44. Cobbs Ford Road (BEFORE) Southern District ITE 2009 Annual Meeting - Birmingham, AL
  45. 45. Cobbs Ford Road (AFTER) Southern District ITE 2009 Annual Meeting - Birmingham, AL
  46. 46. ENFORCEMENT Southern District ITE 2009 Annual Meeting - Birmingham, AL
  47. 47. Southern District ITE 2009 Annual Meeting - Birmingham, AL
  48. 48. Enforcement of Access Management Plans Up to MUNICIPALITIES to enforce – this is why it is so important for them to be involved in the project planning Usually adopted by municipalities and incorporated into their current zoning/site plan approval process While projects are in progress, designer should be available to consult with municipalities on applications received during project design Southern District ITE 2009 Annual Meeting - Birmingham, AL
  49. 49. What’s next for Alabama? ALDOT will be working to develop a Statewide Access Management Policy Manual Southern District ITE 2009 Annual Meeting - Birmingham, AL
  50. 50. How did your state do it? Southern District ITE 2009 Annual Meeting - Birmingham, AL

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