September 1, 1991 – December 31, 2007

Boston's "Big Dig" Construction

Commonly thought of as the most advanced highway project in the United States, the Big Dig replaced Boston's deteriorating six-lane elevated central highway (I-93). It did so with an underground highway and two new bridges over the Charles River. It also extended I-90 to Boston's Logan International Airport, and Route 1A. This project created more than 300 acres of open land while reconnecting downtown Boston to the waterfront, and helped clean up emissions due to more efficient traffic flow.

Boston, Massachusetts

https://letstalkbusiness.net/complexity-the-big-dig-part-2/

Max Melanson