The long-awaited BART extension through downtown San José is facing renewed uncertainty as local officials prepare for potential federal funding cuts under President Trump. BART, or Bay Area Rapid Transit, is the regional train system connecting San Francisco, Oakland, and surrounding suburbs.

The $12.7 billion project relies heavily on a $5.1 billion commitment secured during the Biden administration, and any delay or reversal could further stall progress and drive up costs.

Jacob Wasserman, research program manager at the UCLA Institute of Transportation Studies, spoke to KQED that this project will likely be fully canceled but warned of serious ripple effects. “It certainly will engender delays, which add cost,” he noted, adding that a federal administration “hostile to California” could complicate the project’s path forward.