Commuter-Light Rail

BART Richmond R Line Seismic Retrofit

Biggs Cardosa is acting as the Structures Leader on the seismic retrofit of the Richmond (R-Line) Segment. The project is part of BART’s $1.3 billion voter-approved retrofit program. The segment includes six structures, three of which are long, multi-span viaduct-type structures. The longest of these viaducts is the El Cerrito-Albany Aerial Guideway, which spans from Berkeley, across both Albany and El Cerrito, and into Richmond. It is over 21,000 feet long.

LOCATION
Berkeley to Richmond, CA

BART Rockridge Station Seismic Retrofit

Biggs Cardosa is designing the seismic retrofit of the structure for both a safety and operability criteria as defined by BART for the Earthquake Safety Program. The existing Rockridge BART Station was built in the late 1960’s and early 1970’s. Retrofits for the project include column casing, footing strengthening, and an isolation detail to avoid damage to the access structures when the main structure displaces under earthquake excitation. The secondary structural components are being evaluated with ASCE 31 for an immediate occupancy criterion, and retrofitted in accordance with FEMA 356.

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LOCATION
Oakland, CA

SVBX BART Stations Extension to San Jose

Biggs Cardosa is acting as the Stations Segment Structures Lead for the BART Extension to San Jose contract (SVBX Project). The project consists of Preliminary Engineering for passenger stations and associated ancillary facilities for a 10-mile BART extension through developed areas between Fremont and San Jose. The project includes design of three elevated platform stations and four below ground stations integrated with the line and tunnel segments’ structures. Additional structures include three pedestrian access bridges and two roadway bridges over BART. Rendering courtesy of VBN Architects.

LOCATION
Fremont to San Jose, CA

SVBX BART Extension to San Jose Line Segment

Biggs Cardosa is acting as the Structures Leader on the 10-mile long Line Segment contract for the BART Extension to San Jose (SVBX Project). The project consists of Preliminary Engineering for the aboveground portion of the project, including approximately 40 structures (BART bridges, UPRR bridges, Station Guideways, Roadway Bridges over BART, Retained Cut Sections and Retained Fill Sections. Rendering courtesy of VBN Architects.

LOCATION
Fremont to San Jose, CA

Vasona Corridor Light Rail Project

Biggs Cardosa provided all of the structural design for all major structural elements along the five-mile extension of the Santa Clara Valley Transportation light rail system from the City of Campbell into downtown San Jose. The main structure is the Hamilton Aerial Guideway a 1,500-foot long aerial structure that includes a five-span precast/prestressed bridge over Hamilton Avenue, a two-span precast/prestressed bridge over Highway 17, over 2,000 square meters of MSE walls and numerous architectural retaining and sound wall structures.

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