Metrolinx and Infrastructure Ontario are seeking a contractor for stations, rail and systems work on the Eglinton Crosstown West Extension.

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,

Contractors have launched five of the 10 tunnel boring machines set to dig 64 miles of tunnels for the $46.5-billion project.

Companies also will pay $650 million in compensation to the city of Cologne for damage caused in 2009 by the collapse of underground work.

London’s transportation authority has secured approval to go ahead with a design, build, finance and maintain project for a 1.4-km twin highway tunnel under the River Thames between Greenwich and Silvertown.