Title:
Load Tests: Externally Post-Tensioned Bridge Girders, Part I
Author(s):
Randall W. Poston, Mohammad Irshad
Publication:
Concrete International
Volume:
18
Issue:
8
Appears on pages(s):
39-44
Keywords:
DOI:
Date:
8/1/1996
Abstract:
During the process of expanding transit rail services (METRO) further into Fairfax County, Va., the Washington Metropolitan Area Transit Authority (WMATA) approved a value engineering change proposal. The design substituted simply supported, single-cell, externally post-tensioned segmental box girders for three continuous, twin-cell, cast-in-place box girders. The substitute structures, collectively referred to as the J-2e aerial structures (Fig. 1a and 1b), included the Cameron Run bridge (three spans of 110 ft. [33.5 m], 130 ft [39.6 m] and 110 ft), the Eisenhower Avenue bridge (two spans, each 110 ft [33.5 m]), and the Van Dorn Street bridge (two spans, each 100 ft [30.5 m]).