16th Street SPRR overpass Structure 615
Yuma, AZ

16th Street SPRR overpass Structure 615
Yuma, AZ

As part of the TRACS Seismic Retrofit Program. Schwab Engineering provided seismic modeling, and seismic assessment, as well as independent design check of the seismic retrofits, plans, specifications, and estimates for the existing 183-foot-long bridge over the Southern Pacific Railroad. The special design of seismic retrofit included sliding bearings at the piers to isolate and avoid extensive foundation and substructure retrofit work at the interior pier and the abutments.