E5: QA Issues in Bridge Construction: The Self-Anchored Suspension Span of the San Francisco – Oakland Bay Bridge - Chuck Kanapicki – (All)
American Bridge/Fluor Enterprises, A Joint Venture, are the general contractors building the new signature span of the San Francisco – Oakland Bay Bridge, a self-anchored suspension bridge. The first of its kind in the world, the bridge faces numerous technical and logistical challenges. This presentation provides an update on the project and the quality assurance issues involved as well as discuss social responsibility and sustainable aspects of the project.
When completed, the Self-Anchored Suspension span (SAS) will transform the bridge’s appearance with its unique, asymmetric design. With a main span length of 1,263 feet, the SAS will be the longest single-tower, self-anchored suspension bridge in the world. Motorists will be able to enjoy a dramatic view of the Bay Area’s landscape while driving under an angled canopy of suspension cables.
The 2.2-mile East Span of the bridge includes two main sections: a Self -Anchored Suspension structure with a single 525-foot-tall steel tower and a 1.2-mile-long elevated Skyway viaduct, which descends gradually towards the Oakland shoreline. The roadways, configured as upper and lower decks on the original East Span, will be built as two parallel roadways with five lanes each. The new span will feature a cantilevered bicycle/pedestrian path on the eastbound (south) side and lighting designed to underscore its beauty. All elements of the SAS, including the tower, piers, color and lighting will emphasize an elegant, futuristic appearance.