The Norwegian Public Road Authority has yet to award the third contract covering the 5.7 miles of the tunnel's central section.

Photographs chosen by our editors from submissions to ENR.com/midatlantic/photos.

The planned 170-mile rail line between Lyons, France, and Turin, Italy would include about 100 miles of access and running tunnels.

Controversial plan moves forward to build a 45-mile-long tunnel to draw water from the Sacramento River into the state's supply network.

Italy, Austria and Spanish firms will build 13-km section, including at least 3.2 km of tunnel near historic England site.

São Paulo metro work constitutes region's largest P3 contract.

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

Elon Musk moves forward with a plan to expand his underground transportation system beyond the convention center area and into other Las Vegas corridors.

Hampton Roads Connector Partners (HRCP)—a design-build joint venture of Dragados USA, Vinci, Dodin Campenon Bernard and Flatiron Constructors—has the go-ahead to begin the 55-month process of adding twin two-lane tunnels parallel to existing tubes linking Hampton and Norfolk, Va.

Atkinson constructed a tunnel nearly 4,000 ft long.