This study provides information about over and undercrossings directed toward planners, designers and decision makers who are trying to best serve the needs of bicyclists, pedestrians and the handicapped, whether by means of constructing new facilities or by retrofitting improvements to existing structures. The study was designed to accomplish three basic objectives: 1. Determine the feasibility of new and retrofit designed modifications of over- and undercrossings for use by non-motorized travelers; 2. Develop warrants for new and retrofit design modifications or crossings for these three user groups; and 3. Develop design strategies for the accommodation of these three user groups on new and retrofit crossings. This report includes a review of the state of the art; a discussion of facility needs assessment procedures, including warrants and design selection criteria; the results of field evaluations of various over- and undercrossing facilities conducted by a team of engineers and a panel made up of members with various types of physical disabilities; and recommended design treatments. Also, features for non-structural solutions and innovative or less traditional treatments, as well as prototypical design strategies for both new and retrofit facilities, and examples of desirable and undesirable design practices are given. (FHWA)

  • Corporate Authors:

    De Leuw, Cather and Company

    120 Howard Street
    San Francisco, CA  United States  94120

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • De Leuw Jr, C
    • Danielson, F
    • KUDLICK, W
    • Swan, S
  • Publication Date: 1981-1

Media Info

  • Pagination: 225 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00331731
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-RD-79- 70 Final Rpt., FCP 31E3-032
  • Contract Numbers: DOT-FH-11-9247
  • Files: TRIS, USDOT
  • Created Date: Aug 15 1981 12:00AM