Welcome to SAI! We are a transportation-focused civil engineering and construction management firm specializing in bridge and highway design, structural inspection, traffic engineering, design management, and construction management and inspection. A leader in the field of transportation design and construction management, SAI has provided government and private sector clients with innovative, accurate, and reliable design and consulting engineering services for nearly 60 years.
Project Spotlight:
Neville Island I-79 Main Line and Ramps Bridge Repairs
Allegheny County, Pennsylvania SAI was responsible for the preliminary design, final design, and consultation during construction for the repairs of 27 span structures located within the limits of the I-79/SR 0065/SR 0051 interchanges, which includes the main steel thru-tied arch span over the Ohio River, and the associated deck girder approach spans. In addition, this project includes 8 ramps, and the adjacent Glenfield viaduct bridge. Physical features: 725' main span steel thru-tied arch over the Ohio River and associated deck ...