NBIS and Fracture-Critical (FCM) Bridge Inventory/Inspection (21 Bridges)

SAI was responsible for the NBIS and Fracture-Critical (FCM) bridge inventory/inspection of 21 various steel bridge structures ranging from 480′-4,000′ in length over waterways, railroads, and roadways (three four-year inspection programs 1997 – 2009).

Physical features of the project include the following representative bridges:

  • Neville Island Bridge (I-79) – 4,000′-long tied arch and two-girder bridge.
  • Birmingham Bridge – 2,600′ welded tied arch and multi-girder bridge.
  • Shenango River (S.R. 0422 Eastbound and Westbound) – 1,750′-long welded two-girder bridge.

Other features:

  • NBIS and FCM inspections and reports of 21 major bridges (all bridges inspected at least twice).
  • Perform and/or check structural analysis for each bridge.
  • Prepare inspection report including “crack” tables.
  • Developed CAD inspection drawings to facilitate future inspections.
  • Utilized computerized versions of bridge inspection form D450.

Client Owner: Pennsylvania Department of Transportation, District 11-0
Completion: 2009
Construction Cost: N/A