THE CONCRETE BRIDGE MAGAZINE

SUMMER 2017

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

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S TAT E 44 | ASPIRE Summer 2017 W est Virginia has long been known for its steel bridges. This is ironic, as more than half of the state's bridges (about 52%) are built with concrete girders, and a successful program has been developed for rapidly replacing short- span bridges using standardized concrete beams. But, the West Virginia Department of Transpor tation (WVDOT) has been less successful in letting contracts for long-span segmental concrete spans. Now that is beginning to change as new designs have created successful bridges for WVDOT and contractors. An added benefit from building with concrete to the state is greater tax revenues. The West Virginia Department of Transportation operates with a central office, which handles larger, more complex structures, and 10 district offices. Each district bridge office includes engineers, designers, inspectors, and maintenance crews. For some time, each team has used adjacent concrete box-beam girders standardized for lengths of up to 100 ft. The team selects the length of the bridge from a chart and specifies the designated beams. This approach allows districts to quickly create drawings for shorter-length bridges, leading to short-span projects being constructed with concrete box beams by default. Each district completes two or three such projects each year. Districts used to have on-staff construction teams, but today that work is performed by outside contractors. Consultants work on larger projects when WVDOT is unable to handle the workload or a complicated design is required. In many cases, regardless of who designs the project, spread boxes and I-beams are used for concrete designs. Of the concrete bridges, which account for about 3711 out of the 7187 total, approximately 1420 (38%) feature reinforced concrete, while 2291 (62%) use prestressed concrete, mostly in box-beam designs. Cable-Stayed Bridges Consultants designed two West Virginia's most dramatic concrete bridges, both cable- stayed designs. The East Huntington Bridge, opened in 1985, features precast, prestressed concrete girders with main spans of 900 and Changing Perceptions By Ahmed N. K. Mongi, West Virginia Department of Transportation WEST VIRGINIA'S REPUTATION FOR BUILDING STEEL LONG-SPAN BRIDGES HAS BEGUN TO CHANGE AS IT GAINS SUCCESS WITH INNOVATIVE CONCRETE DESIGNS—AND REAPS THE TAX REVENUE BENEFITS The East Huntington Bridge, opened in 1985, features a precast, prestressed concrete cable-stayed design with only one tower and main spans of 900 and 608 ft. The bridge's structural system is lighter than earlier concrete cable-stayed bridges and was only the second one of its kind to be built in the United States. All Photos: West Virginia Department of Transportation.

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