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.

Planned Northeast Corridor underground rail link has been held up for years.

While the president wants his wall, U.S. Customs and Border Protection agents keep finding subterranean tunnels crossing the U.S. border with Mexico.