American Association of State Highway and USDA - NRCS. 2009. LAN Architecture Note 4. Transportation Officials. 2002. Standard Trails and Walkways Design Aid. Washington, Specifications for Highway Bridges, 17th Edition. DC. Washington, DC. USDA - FS. 1991. Trails Management American Association of State Highway and Handbook. Washington, DC. Transportation Officials. 2009. Guide USDI-NPS. 1996. Handbook for Trail Design, Specification for Design of Pedestrian Bridges, Construction and Maintenance. Washington, 2nd Edition. Washington, DC. DC.
American Association of State Highway and Transportation Officials. 2002. Standard Specifications for Highway Bridges, 17th Edition. Washington, DC. American Association of State Highway and Transportation Officials. 2009. Guide Specification for Design of Pedestrian Bridges, 2nd Edition. Washington, DC. USDA - NRCS. 2009. LAN Architecture Note 4. Trails and Walkways Design Aid. Washington, DC. USDA - FS. 1991. Trails Management Handbook. Washington, DC. USDI-NPS. 1996. Handbook for Trail Design, Construction and Maintenance. Washington, DC.
DraftCO575std.docx