IH Engineers, PC has performed NBIS structural evaluation and load rating on thousands of bridges, culverts, and other structures following policies set forth by the FHWA, States, and other major agencies throughout the Tri-State area. The completed projects included simple, multi span, curved, fracture critical and suspension bridges spanning over major waterways, highways, and railroads. Inspection of the fracture critical bridges required hands on inspection of Fracture critical members (FCM) and members with fatigue prone details (FPD) using non-destructive testing in order to detect fatigue cracks and other metal flaws. Most inspections required the utilization of maintenance of traffic and inspection access equipment such as boats, snoopers, bucket trucks, Under bridge inspection units and man lifts. During field inspection, we encountered critical findings on numerous bridges and structures rendering them structurally deficient which led to the procurement of many bridge replacement and rehabilitation projects. Our experienced and certified staff has the required training and technical expertise to expedite these tasks in a safe and professional manner.            

For structural evaluation we offer the following services:


  • Condition Inspection of All Types of Fixed and Movable Bridges and Culverts Carrying Railways, Roadways, and Waterways
  • Load Rating Analysis
  • Condition Inspection of Buildings and Hangers
  • Tunnel Inspection
  • Ancillary Sign Structures
  • Retaining Walls
  • Dams


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