On 17th April 2024 TBM Mary broke through the headwall on the North Island at Hampton, completing the first of the two road tunnels for the USD 4bn HRBT expansion project in Virginia. The tunnel - 2.4km long and 14 m in diameter – extends 52.73 m under water’s surface in its deepest point. The TBM - launched from the South Island on the Norfolk side in April 2023 - installed 1200 concrete rings. In the next 6 months the TBM will be partially disassembled and then placed on a turntable section by section to be turned around and start boring the 2nd tunnel.
For further information on the project click here and us/125 for the tunnelbuilder archive and visit www.hrbtexpansion.org. 16/24.
07.05.2024 Poland
07.05.2024 Switzerland
13.05.2024 India
15.05.2024 Macedonia
15.05.2024 Czech Republic
16.05.2024 Finland
17.05.2024 Finland
24.05.2024 Switzerland
31.05.2024 Switzerland
07.06.2024 Canada
15.12.2024 Austria