SR 1005, Section 002, Beaver County, PennDOT District 11-0 This project involved the replacement of a narrow 2-lane, 200’ span…
As a prime consultant to PennDOT Districts 1-0 and 10-0, we performed various engineering and environmental services for a variety…
Tri-State Design has substantial bridge safety inspection experience, including the inspection of over 300 state-owned bridges within various counties within…
This project consisted of the replacement design for a group of 4 minor bridges within Allegheny County, with a combined…
Tri-State Design was engaged to design the replacement of an existing, deteriorated, six-span bridge and its approach roadways. The project included…
Tri-State was responsible for the design for the referenced two dual structures. The design alternatives were for a 3-span continuous…
This project consisted of the replacement of an existing 138’, 3-span bridge with approach roadways. As a result of the…
This project involved the rehabilitation of an 8-mile portion of a 4-lane divided highway (I-79, Section A4). Tri-State was responsible…
This project involved the reconstruction of a portion of SR 0048 in Allegheny County from an existing 2-lane roadway to…
Tri-State Design, working as a subconsultant to a major consulting firm, was responsible for the in-depth inspection and rehabilitation design…