Tunnel boring machine

Apr 17, 2024

HRBT expansion’s first tunnel boring is complete

Mary, the tunnel boring machine that has been paving the way for the expanded Hampton Roads Bridge-Tunnel, hit a milestone Wednesday when she finished the first of twin tunnels that are part of the bridge-tunnel’s expansion. Launched from the HRBT‘s South Island a year ago, the $70 million custom-built tunnel boring machine has been busy — […]

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