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BART Fremont Central Park Subway Extension

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BART Fremont Central Park Subway Extension

The Fremont Central Park Subway project was Phase 1 of BART’s overall Warm Springs Extension. The extension added 5.4 miles of new tracks from the existing Fremont Station south to a new station in the Warm Springs District of the City of Fremont. The project consists of 1.5 miles of the new BART line including nearly one mile of subway.

The extension under this contract ran from Walnut Avenue in Fremont to Paseo Padre Parkway. The subway began between the South Tule Pond, just south of Walnut Avenue, and Stevenson Blvd. It extended underneath Stevenson Blvd., Fremont Central Park and Lake Elizabeth. Structures included the nearly one mile of cut-and-cover subway, two BART ventilation structures, retaining walls and three pump structures. For excavation in Lake Elizabeth a coffer dam was installed and the eastern lobe dewatered. Additional work included a dog park, landscaping, irrigation, utility installation, fencing, lighting, earthwork embankments, paving and drainage systems.

Project Details

Location:Fremont, CA
Amount: $153.6M
Delivery Method:Bid-Build
Client Name:Bay Area Rapid Transport
Duration: 2009–2012