Suspender Cable Inspection Using Robotic Technology

This technical report details the inspection of the suspender cables of the Arrigoni Bridge using advanced robotic technology known as RopeScan®. The inspection aimed to determine the actual tension forces of the suspension cables under deadload conditions while minimizing disruption to traffic. The report outlines the bridge's specifications, including its structural features and previous rehabilitation efforts. It describes the scope of work approved by the Connecticut Department of Transportation, which included data collection, coordination with various authorities, and the execution of non-destructive testing methods like Magnetic Flux Leakage (MFL). The inspection process was conducted by Infrastructure Preservation Corporation under the supervision of AI Engineers, Inc. The report also discusses the planning, security coordination, and the use of the RopeScan system for real-time data collection during the inspection. The findings from this inspection are compared with previous testing data to assess the condition of the cables and ensure the reliability of the results.