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The Bridge Street Bridge Deployment Project ventured beyond the traditional limits of infrastructure construction. Experimental in nature, the project demanded extremely high quality materials and workmanship obtained by special procurement measures.

In 1992, City of Southfield officials discovered that a large hole had developed in the deck of the Bridge Street Bridge over the Rouge River. Providing sole access to the Bridge Street Industrial Park Subdivision, the bridge carried an estimated 1,800 vehicles per day to over fifty light industrial businesses.

The City was faced with a challenge that is familiar to communities throughout Michigan and similar climates. The unrelenting Midwestern winter freeze-thaw cycles had taken their toll on the twenty-year-old Bridge Street Bridge. Although bridge deterioration is a common problem, the innovative solution is what sets this project apart.

Hubbell, Roth & Clark, Inc. was commissioned as the consulting engineer to provide investigatory, design, and construction management services. After careful consideration and review of twenty-two potential alternatives, the City elected to replace the original steel and concrete Bridge Street Bridge with two parallel structures, one of which was constructed of concrete reinforced almost exclusively with Carbon Fiber Reinforced Polymer (CFRP), a non-metallic material that was used in place of traditional steel. To date, there are few applications of CFRP in reinforced concrete construction primarily because of limited knowledge and research. Even more significant than the use of CFRP in the Bridge Street Bridge is the extent to which it was used. The design and construction of the Bridge Street Bridge are extraordinary. There is no other bridge of this type anywhere in the world.

The basis of design was the research conducted at Lawrence Technological University under the direction of Professor Nabil F. Grace, Ph.D. With his assistance and that of Professor George Abdel-Sayed of the University of Windsor, the project testing design and material procurement were successfully completed.

The extensive use of CFRP in the Bridge Street Bridge Deployment Project demanded an unusually high standard of quality for both materials and workmanship. Project funding was received from both State and Federal agencies in addition to the City's contributions and a citizen-approved special assessment. Open competitive bids were required for the project's general construction contract. The remainder of the project cost was borne directly by the City via individual procurement contracts with CFRP material suppliers and the contractors who would be dealing with the CFRP. This reformed buying practice, referred to as Quality Based Selection (QBS), allowed the City of Southfield to assemble a unique multi-national project team specifically qualified for the unusual and exacting demands of the project.

Innovation

Construction of the first precast concrete bridge in the world to be almost entirely reinforced with Carbon Fiber Reinforced Polymer (CFRP).

Results

Procurement of high-quality materials and workmanship achieved using a reformed buying practice called Quality Based Selection (QBS).


Client
City of Southfield

Location
Southfield, MI

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