Bridge Rehabilitation and Replacement

SAI is responsible for the in-depth inspection and the preliminary and final rehabilitation design of this major river crossing in Allegheny County, Pennsylvania.

Physical Features: 
  • Major rehabilitation of 12-Span, 2433' deck-truss bridge and multi-girder spanning the Monongahela River and two railroads.
  • Four-lane bridge with one sidewalk.
Other Features: 
  • Deck replacement and floor beam (phased construction).
  • Truss strengthening and widening.
  • Retrofit of truss tie-downs and pin/hangers.
  • Seismic retrofit of main truss bearings.
  • Gussett plate analysis and rehabilitation/strengthening.
  • Fatigue detail and structural steel repairs.
  • Tooth dam replacement.
  • New approach slabs.
  • Repainting.
  • Pier repairs and widening.
  • Lighting replacement.