AASHTO MHB-5-M, Standard Specifications for Movable Highway Bridges, 5th Edition (1988), presents specifications for movable highway bridges. The publication includes an interim that carries revisions from 1992, 1993, and 1995. The specifications draw on American Railway Engineering Association standards for movable bridges, data whose use was approved by the AREA with a stated qualification. The AREA noted that its recommended standards and specifications were prepared to apply to railway bridges. That qualification accompanies the duplication of the AREA material in this publication. Bridge engineers in highway agencies can apply the specifications to movable bridge projects.