USA: The $12.7 billion BART Silicon Valley extension faces a Sept. 15 accountability deadline after a civil grand jury challenged VTA’s financial oversight of the California megaproject.

BART Silicon Valley Phase II project team at a construction site
BART Silicon Valley Phase II project representatives at a construction site. Illustrative image. Photo: VTA.

The June 17 report says VTA does not maintain a project-specific cash-flow model and fails to consistently show how major design decisions affect future operations and maintenance costs. VTA disputes the cash-flow finding, saying it maintains a comprehensive model covering more than 20 years that complies with FTA guidelines. On Aug. 13, VTA’s BART Silicon Valley Phase II Oversight Committee unanimously recommended that the full board adopt a revised formal response before the Sept. 15 deadline, according to San José Spotlight.

The stakes have increased sharply: the project’s estimated cost has climbed from $4.7 billion in 2014 to $12.7 billion today. VTA targets completion in 2037, while federal project oversight uses a more conservative 2039 forecast.

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Why an elevator panel became a budget warning

VTA board member Suds Jain illustrated the long-term cost issue during the Aug. 13 meeting by pointing to custom glass elevator panels at the existing Milpitas station. The panels break and are “unbelievably expensive” to replace, he said, questioning why they were selected. Since 2019, general engineering contracts for the extension have totaled roughly $544 million, while the oversight committee recently recommended a further $150 million contract extension. The example echoed the grand jury’s broader recommendation that VTA evaluate operations and maintenance costs before approving major design and construction decisions.

The project will connect Berryessa/North San Jose with downtown San Jose and Santa Clara through a single-bore tunnel. BART will eventually operate and maintain the completed extension. Its remaining funding gap was previously estimated to be between $700 million and $1.2 billion.

What to watch

Watch for the VTA Board’s final response, due Sept. 15. The committee-backed draft says VTA would introduce operations and maintenance cost analysis before major design decisions by Dec. 31, 2026. Also worth tracking is how VTA reconciles the grand jury’s demand for quarterly project-specific cash-flow reporting with the agency’s position that a compliant long-term model already exists.

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