PROJECTS | AMERICAS


MILESTONE MARKERS


Update on a few key projects with milestone progress points recently achieved in North and South America


TBM LAUNCHED ON SECOND SUBSEA BORE FOR HRBT Tunnelling is under way on the second bore of the Hampton Road-Bridge Tunnel Expansion project (HRBT) in Virginia. TBM ‘Mary’ is making the return journey back towards


South Island after breaking through at the North Island reception pit, early last year, to complete the first subsea bore. The project is Virginia’s first bored road tunnel. Following the first drive, the variable density TBM


was rotated on nitrogen skates in the reception pit and underwent extensive maintenance to prepare for the second drive.


Above: TBM ‘Mary’ has started the second bore of the Hampton Road Bridge Tunnel (HRBT) Expansion project PHOTO CREDIT: VDOT


26 | March 2025


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