Extreme Engineering — Season 1, Episode 9: Boston's Big Dig

Episode synopsis

Boston's new transport system, which features a multi-lane underground highway and the world's widest cable-stayed bridge

About Extreme Engineering

Extreme Engineering covers major construction projects from all around the world. Some are futuristic projects that may never be done, others are projects that are on there way to completion.

More episodes from Season 1

• E1Tokyo's Sky City
• E2Subways in America
• E3Transatlantic Tunnel
• E4City in a Pyramid
• E5Bridging the Bering Strait
• E6Tunneling Under the Alps
• E7Building Hong Kong's Airport
• E8Holland's Barriers to the Sea
• E10Widening the Panama Canal