Pittsburgh plans propose Parsons for bridge project

2693 Parsons Brinckerhoff is handling the design contract for a new bridge in the US city of Pittsburgh. The new structure will replace an existing 89-year-old bridge on South Negley Avenue and the contract was awarded by the authorities in the City of Pittsburgh. The existing bridge carries South Negley Avenue over the Port Authority of Allegheny County East Busway and the Norfolk Southern Railroad. It carries around 15,000 vehicles/day and connects East Liberty and Shadyside. Originally built in 1924 and rehabilitated in 1973, the existing superstructure is a Warren Pratt truss featuring two lanes and sidewalks on both sides. Parsons Brinckerhoff will serve as prime consultant for preliminary engineering, final design, and construction-phase services for the new bridge. The team will also evaluate customised lighting and architectural features for community cohesion. Accelerated bridge construction techniques will be employed to reduce construction time, which should commence in 2016 and be completed in one construction season.