0-6722 : spread prestressed concrete slab beam bridges.
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Published Date:2014-08-01
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Language:English
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Abstract:The Texas Department of Transportation uses precast prestressed concrete slab beam bridges for shorter-span bridges of approximately 30–50 ft in length. Conventional slab beam bridges have slab beams placed immediately adjacent to one another with a cast-in-place (CIP) topping slab. While these bridges are used extensively, they are more expensive than traditional prestressed I-beam structures on a per-square-foot basis. This project investigated the use of slab beams that are spread apart with precast concrete panel (PCP) stay-in-place forms between beams and a CIP concrete deck. Design guidelines have been developed for this alternate spread slab beam bridge system.
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