ada access on paved bikeways - california state parks · pdf fileada access on paved bikeways...
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ADA Access on Paved Bikeways
California State Trails & Greenway ConferenceAccessible Trail Planning, Design & Construction
Friday, May 11, 2007
Michael Jones, Alta Planning + Design
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Outline
• Definition of Facilities
• ADA Requirements
• Pathways
• Parallel Paths
• Intersections
• On-Street Bikeways
• Over/Under Crossings
• Other Facilities
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Definitions
• Caltrans: Class I Bikeway (Bike Path)• Multi-use Path• Multi-purpose Path• Shared Use Path
• Funding source dictates how a facility is defined
• Transportation v. recreation• Caltrans HDM
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ADA Requirements
• Transportation (Class I bike path)• Recreation (Multi-use Trail)• Defined by law and court cases• Title II, Federal Code 28 CFR• ‘Designing Sidewalks & Trails for Access: Review of
Existing Guidelines & Practices, Part I,II’ (FHWA)
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ADA Requirements
• Paved bicycle paths will almost always meet or exceed ADA if built to accepted transportation standards
• Paved recreational trails should also conform to transportation standards: if not, comply with recreational use ADA requirements
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Paved Bikeway Elements
• Bike Paths• Parallel Paths• Intersections• On-Street Bikeways• Over - Under
Crossings• Other Facilities
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Bike Paths
• Width (8’ min – 10’ preferred)• Gradient (5% sustained, up to 12.5% for 10
feet with landings)• Landings not recommended by AASHTO• Railings typically not used• Cross slope 2%• Surface: smooth, gaps ½” max.• Separation of users • Clearance: Vert: 10’ Horiz: 2’
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Bike Paths
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Parallel Bike Paths
• Known as Side Paths, Sidewalks• Controversy on safety• 8’ minimum width• 5’ setback from roadway• Same requirements as bike paths, except
gradient• Driveways• Exceeds sidewalk requirements
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Parallel Bike Paths
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Intersections
• Bollards• Curb ramps (1/4” max vertical)• Detectible warning strips• Placement of ramps• Crosswalks - medians• Audible/Vibro-tactile Signals• Accessible Ped Buttons• Signal Timing• Curb Extensions
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Intersections
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On-Street Bikeways
• Bike Lanes• Bike Routes• Roadways• Gradient Issue
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Bridges - Undercrossings
• Bike/ped structures must be 100% accessible
• Handrails• Lighting• Access• Use of landings• Avoid 180 degree curves• Safety - security
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Other Facilities
• Trailheads• Gangways/Piers• Beach Paths
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Summary
• Routine accommodation• Barrier free access• Equivalent access• Comparable experience• Exceptions: • Significant impacts• Alter setting/purpose of facility• Prohibited by law• Impractical due to steep terrain/construction practices
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DESIGNING FRONTCOUNTRY
ACCESSIBLE TRAILS
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Course Objectives• Design and construct trails that are compatible
with resource management objectives• Design and construct trails that are sustainable
and require minimal maintenance• Design and construct trails that provide a high
quality experience for all users
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Blending Your Trail with the Outdoor Environment
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The Natural Environment is not Angular
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Accessible Trails Should Follow the Contours of the Land and have Soft Edges
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Incorporate Natural or Unique Features Into Your Trail Alignment
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Limbs that do not represent an overhead obstruction should be retained
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Retaining Walls may be Required to Protect Trees or Bridge Over Obstacles
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Retaining Walls Should Utilize Native Materials When Possible
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Retaining Walls Constructed of Native Materials Should be Discrete and not
Overpower the Setting
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Providing a Firm and Stable Surface
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The Standards for Firmness and Stability and Instruments to Measure Tread Surfaces have been Developed
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Native Tread Surfaces Need to be well Shaped, Uniform and Compacted
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Traditional Methods of Stabilizing Trail Tread
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Native Soils may Need to be Strengthened by Adding Crushed Rock (Shale)
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Trails are In Dynamic Environments and Surfaces Cannot be Kept Dry or Clean
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Trail Surfaces Need to Have Enough Roughness and Texture to Provide Traction
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Providing Edge Protection
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Choice of Edge Protection Should be Consistent With Setting
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Native Materials Logs and Rocks
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Plants can Replace Railing and Curbs
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Do not Take the Built Environment Into the Natural
Setting
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Accessible Trail Construction Requires:
• Following sound trail layout and design principles• Following best practices in trail construction • Using native materials to maintain the natural setting• Collaboration with accessibility experts• Creative and innovative approaches