In the early 1970s a radical idea took shape to tear down Boston’s elevated downtown highway and rebuild it underground. At the same time there was a push to create another tunnel to Logan Airport. Here's how those two tunnel projects became one and made history as a notoriously troubled infrastructure project.
This is the second in a ninepart podcast series about the history and politics of Boston's Big Dig. It was created as an audio experience. This episode includes archival highway images.

Episode 1:    • The Big Dig began with activists who ...  
Episode 3:    • How Boston's Big Dig survived Preside...  
Episode 4:    • Here's why Boston's beloved Zakim Bri...  
Episode 5:    • It took a feat of engineering and a p...  
Episode 6:    • Here's how billions of dollars in cos...  
Episode 7:    • How a power struggle over a Massachus...  
Episode 8:    • Boston's Big Dig tunnels were nearly ...  
Episode 9:    • The Big Dig transformed Boston, so wh...  

You can find more about The Big Dig podcast at https://www.wgbh.org/podcasts/thebig...

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