San Francisco: Construction of the Transbay Transit Center

[marmar]

Phase 1 of the Transbay Transit Center (TTC) consists of building the five-story transit center and the bus ramp connecting the center to off-site bus storage. The second phase of the project will complete the 1.3-mile extension of the Caltrain rail line from Fourth and King Streets underground into the new transit center.



The TJPA is the operator-maintainer and it chose to utilize a construction management / general contractor (CM/GC), Webcor/Obayashi. Construction Management Oversight (CMO) is Turner Construction.



The first step was excavating 640,000 cubic yards of dirt, said Senior Construction Manager Dennis Turchon. Before the 1906 earthquake, there was a beach at First Street, one of the major roads crossing the site. TJPA sponsored an archaeological research project within the site where carefully selected locations became the focus of archaeological excavations. A variety of objects from porcelain and glass to prehistoric animal remains were found and preserved.



Construction in a dense, urban setting has led to some necessary innovations being that it’s located in a seismic neighborhood environment. As Turchon said, “We have to be good neighbors. ..........................(more)

http://www.masstransitmag.com/media_gallery/12095135/construction-of-the-transbay-transit-center