Pumped storage hydro owner Snowy Hydro says tunnel integrity has not been compromised, but contractors are taking precautions.

Contractor's managing director for North America talks TBMs, P3s, Canada and more.

$17-billion, 230-km HS2 project will extend service from London to Birmingham England.

Robotic arms for tunnel-boring machines, concrete reinforcement made of old wind turbine blades and machine learning to reduce concrete waste are among innovations emerging from the $16.7-billion civil construction program for the U.K.’s London to Birmingham high-speed railroad. Construction began late last year.

Thames sewer overflow prevention effort cost is now $4.9 billion.

Two pairs of double-shield tunnel-boring machines break the mold in shaping Norway’s new high-speed railroad between Oslo and Ski.