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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Launching a Concrete Bridge Saves
Author(s): David T. Swanson
Publication: Concrete International
Appears on pages(s): 24-29
Keywords: box beams; concrete construction; girders;
jacks (lifts); post-tensioning; precast concrete; prestressed
concrete; prestressing steels.
Abstract:Economy and the unpredictability of the Wabash River in Indiana were major factors in choosing the incremental launching method for a 935 ft long concrete box girder bridge. The superstructure is supported by skewed, solid wall piers founded on rock. A system was designed which involved a launching nose, temporary bridge supports and hydraulic launching jacks to advance the prestressed concrete box girders from the fabrication area across the river. Post-tensioning was accomplished after the concrete reached 3500 psi.
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