The VTA Silicon Valley Berryessa Extension consists of the design and construction of a 10-mile extension of the Bay Area Rapid Transit (BART) system into Santa Clara County. The extension connects to the track south of the BART Warm Springs Station and proceeds in the former Union Pacific Railroad (UPRR) corridor through Milpitas to the Berryessa District of San Jose, near Las Plumas Avenue. The alignment is a combination of at-grade, open-cut, and aerial guideway configurations, and includes a retained-cut passenger station in Milpitas (Milpitas Station) and an above-ground passenger terminus station in San Jose (Berryessa Station). The project also included a two-cell, cut-and-cover tunnel under a major intersection, five overcrossings over heavily used city streets, and restoration and enhancement of a portion of Upper Penitencia Creek to create a more natural channel with a widened floodplain and riparian habitat.

LAN served as design manager and lead designer. The firm’s design services included civil engineering, structural engineering, drainage, hydraulics and hydrology, utilities, traffic planning and maintenance of traffic, geotechnical engineering, environmental engineering, trackwork, systems, and architecture/engineering for two large stations. LAN also provided right-of-way services for the project by maintaining master right-of-way files and identifying and processing property acquisition requests to obtain additional right-of-way or additional easements as needed.