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United States Highway 3 is a north-south United States highway that runs from northern New Hampshire to Boston, Massachusetts. Parts of it are also known as the "Daniel Webster Highway". In places it is also part of Interstate 93.
| Approximate time period | North Terminus | South Terminus |
|---|---|---|
| 1926-1928 | Colebrook, New Hampshire | Boston, Massachusetts |
| 1928-1937 | West Stewartstown, New Hampshire | Boston, Massachusetts |
| 1937-1939 | Pittsburg, New Hampshire | Boston, Massachusetts |
| 1939-1940 | Colebrook, New Hampshire | Boston, Massachusetts |
| 1940-present | Connecticut Lakes, New Hampshire | Boston, Massachusetts |
Connecticut Lakes, New Hampshire
List of United States Highways