Border patrol agents discovered an underground tunnel connecting a residence in Tijuana to the San Diego area, which authorities said was being built to smuggle narcotics across the border ...

The Santa Clara Valley Transportation Authority (VTA) appears ready to find a new contractor for the BART Silicon Valley Phase II (BSVII) project in an effort to stabilize the multi-billion ...

An incomplete but “highly sophisticated” drug-smuggling tunnel between Tijuana and Otay Mesa was located and disabled by the U.S. Border Patrol, officials said Wednesday. The cross-border ...

Mary, the tunnel boring machine, is expected to finish the second tunnel by September.

PAID CONTENT: Learn about Tunnel to Towers' impactful fight against veteran homelessness. CEO Frank Siller discusses T2T's work providing housing and support for thousands of heroes.

The Tonnelle phase represents just a sliver of the overall $16 billion Gateway tunnels program. The excavation work is in preparation for the tunnel boring machines that will begin drilling ...

Over 50 years ago, workers punched a pair of mighty holes through the Rockies to form the Eisenhower Tunnel. How long is the tunnel, and is still safe to use?

When placed under a powerful laser field (i.e., under strong-field ionization), electrons can temporarily cross the so-called quantum tunneling barrier, an energy barrier that they would typically ...

The Sumner Tunnel will be closed to traffic overnight Monday as crews install overhead signage, MassDOT said Friday.

Army Corps of Engineers study found a tunnel would have a "beneficial cumulative effect" on reducing the risk of a crude oil leak from the pipeline.

Transit reporter Samantha Liebman got a look at what’s happening on the Hudson Yards side of the Gateway Tunnel.