Tri-State Design has substantial bridge safety inspection experience, including the inspection of over 300 state-owned bridges within various counties within PennDOT Districts 1-0, 10-0, 11-0 and 12-0, and over 250 bridges owned by Allegheny County Public Works, the Port Authority of Allegheny County, and the Airport Authority of Allegheny County. These bridges represent a wide range from minor to major multi-span bridges. We have also performed in-depth inspections, load ratings, rehabilitation recommendations and reports for several service bridges over major locks and dams owned and maintained by USACE, Pittsburgh District. We have performed the inspection of several retaining walls, culverts and other structures. Our scope of services for the above projects included initial and biannual inspections, core element inspections, and fracture critical bridge inspections.
During the past seven years, Tri-State Design, as a subconsultant to a major engineering firm, has performed in-depth and cursory inspections and reports for major and minor highway sign structures within PennDOT Districts 10-0, 11-0, and 12-0. These inspections were performed by Certified Bridge Inspectors and Professional Engineers. Tri-State has also performed bridge inspection and design services under GAEC 93-07, which encompassed an in-depth inspection and rehabilitation design for the Monongahela Incline.