In the 1930s, workers bored a 13-mile tunnel beneath Mt. San Jacinto. Here's a look inside the engineering feat that carries ...

Researchers in Sweden have discovered why concrete in underwater road tunnels can break down much faster than expected—and ...

When seawater penetrates concrete in road tunnels, a biofilm is formed that breaks down the concrete. This can lead to high costs and the risk of damage if stone and concrete drop from the tunnel roof ...

Drivers have no need to fear using the U.S. 1 tunnel in downtown Fort Lauderdale despite a driver’s recent report of falling concrete, state officials say. Crews were sent in to inspect the Henry E.

Since 2014, researchers studying the Oslofjord tunnel have observed that bacteria can erode up to one centimeter of concrete annually. When a saltwater intrusion occurs, biofilms ...

Burglars tunneled through a concrete wall to gain access to a Los Angeles jewelry store, making off with at least $10 million worth of watches, pendants, gold chains and other merchandise ...

The bacteria attack the concrete that is supposed to prevent stones from loosening from the tunnel walls. The concrete becomes porous and risks breaking apart. The biofilm gets its distinctive ...