As a subconsultant, SI Engineering, P.C. (SIE) provided bridge inspection services for the biennial and interim inspections of the Queensboro Bridge. Responsibilities included the 100% hands-on inspection of the fracture critical elements of the upper level and lower levels, including the orthotropic deck, floorbeam, truss elements, eye bars, pins, and towers, each of which was accessed by aerial lifts, walking, travelers, safe span, and ladders.
Further responsibilities included the inspection of fracture critical members, welds in tension zones, section loss calculations for deteriorated steel members. The inspection followed the latest NYSDOT BIM, which required documentation and photographs of conditions which were rated condition ratings of CS-3 through CS-5, including any increase ratings from the previous inspection. Flags were issued through BDIS and NSCO’s were also submitted when warranted. The field note documentation included detailed notes of observations as per AASHTO element level and NYSDOT requirements. SIE also assisted with the NYSDOT biennial report and BDIS update.
