The Boston Bypass was a proposal that was floated by Zarrilli as an alternative to the Big Dig. The plan, as espoused by Zarrilli, would be to build a 10-mile double-deck road-and-rail bridge over Boston Harbor from Dorchester to Charlestown including railway access to Logan Airport. The intent would be to remove traffic from the downtown stretch of Interstate 93, also known as the Central Artery.

Zarrilli was a major opponent of the Big Dig, and was notable during the 1980s and 1990s as the man responsible for a multitude of hand-lettered signs posted around the Boston area reading "Back the B.B.". Zarrilli supported the construction of the roadway despite the completion of the Big Dig, feeling that the depressed Artery would not provide sufficient traffic relief.

Little to no research was done to establish the feasibility of the project, and it never garnered much support in the state legislature. The Boston Bypass is not to be confused with the South Boston Bypass Road (originally known as the South Boston Haul Road), an early project of the Big Dig built along an old railroad right-of-way in South Boston and used to carry commercial traffic to Logan Airport.

• "The Boston Bypass Plan of Vincent Zarrilli". Archived from the original on 2006-08-16.
• https://www.potshopofboston.com/