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Federal Recreational Trail Program

We at Dieselbikes have been completing tons of Trail work throughout Lynn Woods and plan on expanding these efforts to other mountain bike trail locations.  Over the past years, we have been asked what trail building standards do we follow or use as a guideline.  The answer to this question can be found at the Federal Highway Administration Recreational Trails Program (FHWA-RTP) website.

The FHAW-RTP website contains standard guidelines for trail design, specifications and maintenance.  In general, most trail design groups such as International Mountain Bicycling Association (IMBA) use these guidelines provided by the FHAW-RTP and add an enhanced level of guiding principles which are defined for specific or multi-use trails.  In this case IMBA will provide more information related to bicycle trail design and maintenance, but still derive their general specifications from the FHWA-RTP.

We at Dieselbikes rely on the FHWA-RTP's guidelines to aid in our trail building, but we also mix in the use of IMBA's published trail guidelines.  Much of what we do involves common sense and sometimes it is trial and error.  There is no book or drawing that will tell you what to do, how to do it and what the trail will look like 1 ~ 5 years later.  Every trail is different and this calls for a unique approach for each one!

Below is a short list of (public) trail design drawings provided by the Federal Highway Administration Recreational Trails Program.  Dieselbikes has provided this list for quick access since the FHWA-RTP website is rather large. 

You can visit the FHWA-RTP by clicking this link for more information and publications.

The information listed on this web page is for informational purposes only and does not constitute a standard, specification or regulation.  The drawings below are public information provided by the FHWA-RTP website.   If you download and/or use this information, we at Dieselbikes are not legally responsible for any injury or death.

Trail Bed Information

FHWA-RTP File # File Type  

Clearing Limits (Trail Thread)

911-1

PDF

 

Typical Trail Cross Section

912-1

PDF

 

Trail Bed & Slope Finish

912-2

PDF

 

Talus & Rubble Rock Section

912-3

PDF

 

Grade Dip

912-4

PDF

 

Rolling Dip

912-5

PDF

 

Turnout & Passing Sections

912-6

PDF

 

Shallow Stream & Gully Crossing (Rock Structure)

912-7

PDF

 

Shallow Stream & Gully Crossing (Log Structure)

912-8

PDF

 

In-sloped Climbing Turn

912-9

PDF

 

Out-sloped Climbing Turn

912-10

PDF

 

Turnpike - Type I

913-1

PDF

 

Turnpike - Type II

913-2

PDF

 

Switchback - Type I

914-1

PDF

 

Switchback - Type III

914-3

PDF

 
       

Trail Water Control Information

FHWA-RTP File # File Type  

Check Dam

915-2

PDF

 

Culvert With Headwalls

921-1

PDF

 

Culvert Without Headwalls

921-2

PDF

 

Rock Culvert

921-3

PDF

 

Treated Timber Box Culvert

921-4a

PDF

 

Treated Timber Box Culvert Details

921-4b

PDF

 

Rock Waterbar

922-1

PDF

 

Log or Treated Timber Waterbar

922-2

PDF

 

Rubber Belting Waterbar

922-3

PDF

 

Rock Spillway

923-1

PDF

 

Under Drain

924-1

PDF

 
       

Trail Bridge Information

FHWA-RTP File # File Type  

Foot Log Trail Bridge

931-1a

PDF

 

Foot Log Trail Bridge Cross Section

931-1b

PDF

 

Optional Deck & Handrails

931-1c

PDF

 

Puncheon Without Decking

932-1

PDF

 

Puncheon With Decking

932-2

PDF

 
       

Retainers, Barriers & Elevation Control

FHWA-RTP File # File Type  

Plank Stairway

933-1

PDF

 

Crib Ladder Stairway

933-2

PDF

 

Rock Stairway

933-3

PDF

 

Pinned Stairway

933-4

PDF

 

Log & Treated Timber Riser Stairway

933-5

PDF

 

Log Retaining Wall

934-1

PDF

 

Rock Retaining Wall

935-1

PDF

 

Aggregate Surfacing

941-1

PDF

 

Bituminous Surfacing

942-1

PDF

 

Grid Pavement Unit

944-1

PDF

 

Log Barrier

953-1

PDF

 

Log Barrier on Posts

953-2

PDF

 

Treated Timber Barrier

953-3

PDF

 

Treated Timber Barrier on Posts

953-4

PDF

 

Rock Barrier

953-5

PDF

 
       

Retainers, Barriers & Elevation Control

FHWA-RTP File # File Type  

Illustration of Trail Structure Terms

Figure-1

PDF

 

Sign & Post Installation

952-1

PDF

 

Rock Cairn Construction

952-2

PDF

 

Existing Trail Restoration

915-1

PDF

 

Trail Obliteration

954-1

PDF

 
 

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