- The existing 426-foot bridge is a five-span structure built in 1970, carrying I-691 over State Street and AMTRAK railroad, with an average daily traffic volume of 72,400 vehicles in 2013.
- The existing bridge consists of a concrete deck and simply supported prestressed concrete beams atop reinforced concrete abutments and piers. The 2011 inspection report determined that the superstructure and substructure were in need of repair in order to increase the lifespan of the bridge. Obsolete guiderail was also identified for replacement.
- Traffic control was a main priority during construction, precautions were carefully planned to ensure limited effects on traffic.