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:


Campbells Run Road Improvement Project

Allegheny County, Pennsylvania SAI is responsible for the Preliminary Engineering, Right-of-Way Plan development, and Final Design for the widening and reconstruction of Campbells Run Road (County Road 6072), an urban minor arterial highway in Collier and Robinson Townships, Allegheny County. Intersecting roads and drives are being upgraded to be compatible with the proposed mainline improvements and to address the design year traffic capacity requirements. The project goal is to effectively and safely meet current and future transportation needs. Physical Features: ...