Long, arching spans and tall, slender piers create an elegant concrete structure across the Monongahela River. The 3,200’ long bridge consists of seven spans, including a 518’ main span, built using balanced cantilever segmental construction to cross the river, two active rail lines and local roads. Cast-in-place concrete construction was used to form the 89’ wide, dual-cell box girders in this mountainous terrain where piers reach over 200’. The bridge includes over seven million pounds of reinforcing steel, 3,324 linear feet of drilled shafts, 51 thousand cubic yards of concrete and three million pounds of posttensioning.

GM2's Complex Bridge staff, as the designer, worked with the contractor to provide a Contractor Alternate design-build solution that was bid competitively against an owner’s as-designed project. The alternate design provided by GM2's Complex Bridge staff with the contractor resulted in significant savings for the Pennsylvania Turnpike Commission. The contractor’s low bid of $95 million, that included design costs, saved $8.6 million under the price bid for the owner’s as-designed structural steel bridge contract documents.