Effective Treatments of Over and Undercrossings for Use by Bicyclists, Pedestrians, and the Handicapped

Federal Highway Administration

The study was designed to accomplish three basic objectives:

  1. Determine the feasibility of new and retrofit design modifications of over and undercrossings for use by non-motorized travelers
  2. Develop warrants for new and retrofit design modifications of crossings for these three user groups
  3. Develop design strategies for the accomodation of these three user groups on new and retrofit crossings

This report includes a review of the state of the art; a discussio 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.

Filed in: Engineering

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