A 5,600-year-old underwater bridge forces experts to rethink human history

Construction and environmental preservation The dry stone bridge spans 25 feet (7.7 meters) across a subterranean basin and ...
New York Post

200-year-old Pennsylvania bridge reemerges from lake during drought, closed over collapse fears

A historic bridge built more than 200 years ago in southwestern Pennsylvania has been closed off to the public after officials said they cannot guarantee the structure’s stability. The Great Crossings ...
Phys.org

Monitoring sediment buildup in underwater bridge tunnels with the help of high-energy muons

Over 200 underwater bridge tunnels exist for vehicular traffic around the world, providing connectivity between cities. Once constructed, however, these tunnels are difficult to monitor and maintain, ...
WCVB Channel 5 Boston

Go underwater with this dive team as they inspect Massachusetts bridges

PHASE IN CASE ANYTHING GOES WRONG. DIVING DEEP AND SEARCHING FOR UNDERWATER DANGERS THAT COULD THREATEN MASSACHUSETTS DRIVERS. TONIGHT FIVE INVESTIGATES TAKES YOU INSIDE THE MISSION TO FIX OUR BRIDGES ...