List of numbered routes in Massachusetts List List

| Name_ | Route_numbers | Length_mi | Location_ | Notes_ |
|---|---|---|---|---|
| East Boston Expressway |  | 1.2 | Boston | The East Boston Expressway comprises the first 1.2 miles (1.9 km) of Route 1A`s northern segment. It stretches from I-93 Exit 24 at the southern end of the Callahan Tunnel (northbound) and the Sumner Tunnel (southbound) to just northeast of the interchange with Route 145 in East Boston, near the eastern end of the Mass Pike. |
| Grand Army of the Republic Highway | * | 117.46 | Seekonk to Provincetown | The cross-country U.S. Route 6 is designated Grand Army of the Republic Highway over its entire length, which spans 3,205 miles (5,158 km). |
| Horseneck Beach Connector | * | 13.03 | Westport | Route 88 serves as a connector running from the Horseneck Beach Reservation north to I-195 Exit 10 in Westport. |
| Loop Connector | * | 3.56 | Methuen | Route 213 is designated Loop Connector. It serves as a freeway connection between Interstates 93 and 495 in Methuen. |