Anthony Wayne Bridge Dehumidification

Project Date: 2018-2020

The Anthony Wayne Bridge, also known as the High Level Bridge, is a 3,218-foot-long suspension bridge in Toledo, OH spanning the Maumee River. The bridge was constructed in 1931 and connects Clayton Street to Woodville Road, carrying Ohio State Routes 2, 51, and 65.  This bridge has three suspended spans.  The main span is 785 feet long and the two side spans are 233 feet long.  The bridge also features Warren deck truss approach spans that are adjacent to the suspended side spans.

Typical of suspension bridges, its main cables are susceptible to corrosion due to trapped moisture. In order to protect the entire length of the main cables and strands in the anchorages, a dehumidification system was selected as the means to extend the life of the cables. In 2018, ODOT awarded a Modified Design-Build Operate-Maintain contract for dehumidification of the main cables and anchorages and aesthetic LED lighting. The dehumidification system provides protection for the main cables, including the splayed strands in the four anchorages, by encompassing them with an airtight and weatherproof seal allowing a continuous flow of dried air. This method protects the cables by reducing relative humidity and suppresses further cable deterioration from corrosion to extend the cables’ life for as long as practically possible. 

TIS Responsibilities for the Anthony Wayne Bridge Dehumidification Project include:

True Inspection Services (TIS) thoroughly tested and inspected to the system to demonstrate reliability and troubleshoot any issues during its service life. Ancillary work included cable clamp bolt replacement, dynamic lighting installation on the main cables and sidewalk, main cable handrail replacement, cable hold down work,  installation of a cable access system, cable wrap work, painting of cable bands, maintenance of traffic, and construction of a dehumidification building.