Building Bridges the Old Way

by Robert C. Cassano, Chf.; CALTRANS Div. of Structures, 1120 N St., Sacramento, CA,


Serial Information: Civil Engineering—ASCE, 1987, Vol. 57, Issue 1, Pg. 61-63


Document Type: Feature article

Abstract:

Cast-in-place concrete bridges built on falsework, particularly post-tensioned box girders, are California's dominant structure type. Factors which have led to the popularity of this method of construction include adaptability to any roadway geometry, flexibility in aesthetic treatment and superior durability. Risks associated with the use of falsework have been reduced by revising falsework specifications and extensive training. The low cost of cast-in-place post-tensioned box girders has been favorably influenced by refinements in prestressing systems, the use of concrete pumps and deck finishing machines, and the fact that experienced contractors have developed efficient falsework systems.

Subject Headings: Falsework and scaffolds | Girder bridges | Concrete bridges | Tension | Construction methods | Cast in place | Box girders

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