The new Benicia-Martinez Bridge is a four frame, 2,266 meter long by 25 meter wide cast-in-place, post tensioned, segmental concrete bridge spanning the Carquinez Strait. The superstructure is supported by seventeen pile-supported foundations, twelve of which are located in water. The bridge carries five lanes of northbound Interstate 680 traffic and has the potential for a future BART light rail lane.
The E2 foundation, on the east end of the project, consists of a composite steel and concrete footing founded on 16 cast-in-steel shell piles driven 300 ft into the San Francisco Bay mud. The T1 foundation at the west end of the project is the foundation for the main suspension tower of the self anchored suspension bridge. It consists of 13 cast-in-place drilled hole piles which extend approximately 200 ft into the Alameda rock formation.
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33455 6th Avenue South
Federal Way, WA 98003
Tel: (253) 943-4200
Fax: (253) 943-4021