DIVING DEEP AND SEARCHING FOR UNDERWATER DANGERS THAT COULD THREATEN MASSACHUSETTS DRIVERS. TONIGHT FIVE INVESTIGATES TAKES YOU INSIDE THE MISSION TO FIX OUR BRIDGES. AND AS BRITTANY JOHNSON SHOWS ...

"We're able to go underwater and build forms underwater with concrete and then do concrete pours to stabilize the bridge in emergency situations," he said. "We've done probably about 25 repairs in ...