| Callahan Tunnel |
| Carries traffic under the Boston Harbor connecting Boston's Logan International Airport with Route 1A |
| Massachusetts Turnpike |
| Extends east-west for 138.1 miles across Massachusetts from Boston in the east to the New York state line in the west. |
| Sumner Tunnel toll |
| Carries traffic under the Boston Harbor connecting Boston's Logan International Airport with Route 1A |
| Ted Williams Tunnel |
| The final segment of the Mass Pike that carries traffic under the Boston Harbor connecting South Boston with Route 1A |
| Tobin Memorial Bridge |
| Spans the Mystic River between Boston, MA and Chelsea, MA |