With fewer than 6 km left on the final Alpine drives, the $11.5-billion Brenner Base Tunnel shifts toward systems installation and a planned 2028 opening.
A partial collapse in LA’s Clearwater Tunnel trapped 31 workers nearly 450 ft underground; all were rescued safely. Officials cite soft soil and “squeezing ground” as likely contributing factors.
German-based TBM manufacturer is progressing on a challenging dig under the Elbe River estuary, and expects further tunnel work in the future as Germany prepares significant investments in infrastructure.
With its workforce now peaking at around 30,000, the U.K.'s London-Birmingham 140-mile HS2 high speed railroad is shifting into the fit-out stage with more than $6 billion of track and system work being readied for procurement.
One team in England recently achieved one of the world's most sustained single tunnel-boring machine drives on a mine project, says its contractor, while another secured a design-build contract for the country's longest road tunnel,