SR 0079, Section A4 Interstate 79, Mercer County, PennDOT District 1-0

This project involved the rehabilitation of an 8-mile portion of a 4-lane divided highway (I-79, Section A4). Tri-State was responsible for the preparation of maintenance and protection of traffic plans, right-of-way plans, structure plans, and signing / pavement marking plans for the entire section. MPT plans included geometric, as well as pavement design, for four (4) high-speed and nine (9) low-speed crossovers, including signing, ramp widening, and signing for the approach roadways. We also performed the inspection and inventory of all major and minor existing sign structures, and prepared new signing and pavement marking plans to meet present criteria for the mainline and exit ramps.

Scope of our bridge design consisted of the rehabilitation design of a total of four (4) bridges.

The design was successfully completed under an accelerated schedule.