United States Department of Transportation
i
Ohio: State Route 22 at Milepost 6.57, Guernsey County
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2000-01-01
[PDF-53.51 KB]
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Abstract:The high-performance concrete (HPC) structure on State Route 22 in Guernsey County, Ohio is a single-span, prestressed concrete box-beam bridge composed of 12 side-by-side 1219-mm-wide (48-in.-wide) by 1067-mm-deep (42-in.-deep) beams topped with a non-composite asphalt wearing surface. The bridge is 14.6 m (48 ft) wide, with a single span measuring 35.2 m (115 ft 6 in.) bearing to bearing. The abutments are stub-type on a single row of H-section steel piles. Construction was phased to eliminate a detour during the replacement of the existing structure. The normal replacement alternatives for this bridge site would be a three-span normal-concrete slab bridge, a single-span steel or prestressed normal-concrete I-beam with cast-in-place concrete deck, or a three-span non-composite prestressed normal-concrete box-beam bridge. The lowest cost would be the box beam, which was the original bridge type selected. Using HPC and 15.2-mm (0.6-in.) strands, the box beam's span range increased to offer a lowest cost single-span alternative by eliminating two substructure units that would be required for the current low-cost structure. In addition, the structure's life will be enhanced because of the durability benefits associated with HPC's low permeability.
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