The
Central Artery, officially known as the
John F. Fitzgerald Expressway, is a section of
freeway in downtown
Boston, Massachusetts, designated as
Interstate 93 (I-93),
U.S. Route 1 (US 1) and
Route 3. It was initially constructed in the 1950s as a partly
elevated and partly
tunneled divided highway and named after
John F. Fitzgerald. Now, however, it is mostly made up of tunnels that were built during a ten-year period from the mid-1990s to the early 2000s as part of the
Big Dig (Central Artery/Tunnel) project.