The VTA board is evaluating whether to switch from a single-bore tunnel design to twin tunnels for the Silicon Valley BART Expansion. A recent 78-page report indicates that the current single-bore design is more cost-effective, less impactful, and faces fewer construction challenges, particularly in Downtown San Jose. The overall budget for this project is nearly $13 billion. VTA's Chief Megaprojects Delivery Officer, Tom Maguire, supports the single-bore approach due to its innovative aspects and reduced disruption during construction.
The VTA board is considering switching from a single tunnel to twin tunnels for the Silicon Valley BART Expansion project amid financial discussions.
A new 78-page report analyzes both approaches and found the current design is substantially more expensive and more impactful than the other.
VTA Chief Megaprojects Delivery Officer Tom Maguire emphasized that making the right and most cost-effective decisions is critical to manage nearly $13 billion funding.
The report found the twin bore design is not only more expensive, but it would create significantly more construction issues for Downtown San Jose.
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