Mobissimo

The Big Dig of Boston is one of the greatest engineering marvels ever, but also one of the costliest.  Was it worth it after so many delays, cost overruns, and a death?  The connection of the interior to the waterfront opened up the city instead of dividing it like the current above ground elevated highway.  Some more via Yahoo!

"For a while we thought we weren't going to make it," Merola said. "But you know, we hung in there."

The Central Artery/Third Harbor Tunnel Project — as the Big Dig is officially known — has its roots in the construction of the hulking 1950's era elevated Central Artery that cut a swath through the center of Boston, lopping off the waterfront from downtown and casting a shadow over some of the city's oldest neighborhoods.