SR 0088-A10, Point Marion Bridge – Construction Inspection

SAI was responsible for the construction inspection of a major bridge over Monongahela River that consists of four spans: one steel girder approach span, a haunched Parker Truss over the main channel, and a two-span continuous steel girder approach. The new bridge was constructed just upstream from the old bridge that remained open during construction. No detour was required.

Physical features:

• 746′ four-span (one steel girder approach span, a haunched Parker Truss over the main channel, and a two-span continuous steel girder approach span) major river crossing bridge over the Monongahela River.
• 1550′ approximate total length of the project including roadway approach.

Other features:

• Typical bridge section is two 11′ lanes with 3′-6″ shoulders and a 10′ sidewalk. A key construction constraint was the required temporary horizontal navigation clearance of 300 feet during construction due to the close proximity to an upstream lock and dam.