Task 56, FY 1993, "Review of AASHTO Standard Specifications for Highway Bridges, Foundation and Substructures Provisions" (D'Appolonia). The AASHTO Highway Subcommittee on Bridges and Structures requested this task to support an effort to review a large number of industry comments on the recently adopted revisions to the foundation and substructure provisions in the AASHTO Standard Specifications for Highway Bridges. The consultant reviewed a substantial amount of technical material and provided recommendations on whether and how any specification provisions should be modified. The consultant worked with representatives of the Bridge Subcommittee and prepared modified specification provisions. These provisions were adopted by AASHTO in 1993. The project is complete.