NYSDOT Region 11 Load Rating

Region 11, NY

AI performed the Level I and Level II Load Rating of approximately 160 bridges, for as-built and as-inspected condition. The bridges were rated using BrR (formerly Virtis). The type of bridges included simple steel multi girder bridges, flared girder bridges, deep girder floor beam stringer system, truss bridges, prestressed concrete bridges. The tasks included detail analysis of deteriorated condition, various options in estimates of failure in prestress strands for deteriorated prestress members. The number of spans varied from single through over 120 spans per bridge. All inspection, coordination and report work was performed to the highest quality standards, efficiency and technical knowledge using capable, qualified and experienced staff. Bridge elements were rated and flag conditions were processed in accordance with the NYSDOT procedural guidelines for bridge inspection. Appropriate flags were issued when conditions found posed potential safety hazards and/or structural deficiencies that could have led to imminent failure. Analysis of bridge structure was performed where and when required.

Highlights 

  • Client: NYSDOT Region 11
  • Duration: 2009 - 2011
  • Project Scope:
    • Perform NBIS inspection
    • Free climbing & rigging
    • BIPPI inspection reports
    • Structure inventory & appraisal