Extreme Engineering: The Labor Day Weekend Detour Operation

Construction crews moved nearly 7,000 tons of steel at the Bay Bridge construction site on Yerba Buena Island over Labor Day weekend in September 2009.

Frame 1: The prefabricated, whitish double-tiered deck section is poised to slide in. Frame 2: The old deck section has been removed, leaving a cavernous hole in the bridge structure. Frame 3: The new deck section has slid smoothly into place; also visible at the top of photo is the Skyway portion of the new East Span, with its side-by-side decks. Frame 4: The Bridge reopens to traffic, which must now slow down to navigate the detour’s “S” curve. Photos 1, 2 and 3 © 2009 Barrie Rokeach www.rokeachphoto.com; photo 4 is from EarthCam. Watch a time-lapse video of the Labor Day weekend bypass operation at: http://mtc.ca.gov/news/video.htm

Published: December, 2009 

Construction crews moved nearly 7,000 tons of steel at the Bay Bridge construction site on Yerba Buena Island over Labor Day weekend in September 2009. The job called for realigning the path of the old East Span by removing a massive double-deck piece of the bridge, and sliding in the last link to a detour. The bypass operation cleared the way for the new East Span to complete its march toward the Yerba Buena Island tunnel over the next four years.