Cable wedging to evaluate number of degraded wires and analysis to determine cable strength. Humidity assessment, implementation of improvements.

In 1986, Weidlinger Associates investigated the suspension systems of the Walt Whitman Bridge, identifying the causes of suspender wear and corrosion and analyzing wear at finger joints and connections. Eight feet of cable were also unwrapped and internally inspected. The firm recommended remedial collar designs, which were implemented. In 2003, Weidlinger performed an extensive investigation of the main cables from anchorage to anchorage to assess their reliability. The scope of work included analysis of remaining cable strength and improvements of the cable-protection system. The firm investigated cable band rotation and bolt tension, anchorages and tower housings, and corrosion conditions and made recommendations for dehumidification. The project required suspender removal, the opening and wedging of approximately 480 feet of cable, and extensive testing of cable wires. For the corrosion study, Weidlinger placed sensors inside the anchorages and saddle housings of the towers to collect environmental data. The investigation report included recommendations for remedial measures

Completion Date: 2003
Location: Philadelphia, Pennsylvania
Owner or Client: Delaware River Port Authority
Prime Consultant(s): WAI Prime