Locale : North America (English)
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The Warm Springs station, a 34-acre multimodal transit hub, offers seven bus bays, 2,000 parking places, and an iconic glass rotunda

Closing the gap in San Francisco Bay


BART, the Bay Area Rapid Transit system, can take a rider from San Francisco International Airport, across the San Francisco-Oakland Bridge, and clockwise around the bay through Oakland, San Leandro, Castro Valley, Hayward, and Union City.

But it stops short in Fremont, forcing riders bound for San Jose to use other means of transport. BART’s Warm Springs Extension project, a major step toward closing that gap, adds 5.4 miles (8.7 kilometers) of new track from the existing Fremont station to a new station in Warm Springs.


Mott MacDonald was retained to carry out the Systems Integration Test Program Plan, ensuring that the extension will perform as expected. Testing includes systems for communication, automatic train control, traction power, electrical, mechanical, fire detection, fare collection, and CCTV systems.


The Warm Springs Extension will reduce traffic congestion by shortening the travel distance for connecting transit services. The extension increased transit ridership by 4,700 daily trips when it opened, a figure expected to reach 7,200 daily trips by 2025.

The Warm Springs station, a 34-acre multimodal transit hub, offers seven bus bays, 2,000 parking places, and an iconic glass rotunda.

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