Southeast Expressway (Boston)

Interstate 93
Route information
Length:	189.95 mi (305.69 km)
Existed:	1957 – present
Major junctions
South end:	I‑95 / US 1 / Route 128 in Canton, MA
	Route 3 in Braintree, MA I‑90 / Mass Pike in Boston, MA I‑95 / Route 128 in Reading, MA I‑495 in Andover, MA I‑293 / NH 101 in Manchester, NH I‑293 / Everett Turnpike in Hooksett, NH I‑89 in Bow, NH I‑393 / US 4 / US 202 in Concord, NH
North end:	I-91 in Waterford, VT
Location
States:	Massachusetts, New Hampshire, Vermont
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Massachusetts State Highway System Interstate US State New Hampshire Highway System Interstate U.S. State Turnpikes State highways in Vermont ← I‑91 MA I‑95 → ← I‑89 NH I‑95 → ← I-91 VT VT 100 →

Interstate 93 (I-93) is an Interstate Highway in the New England region of the United States. It begins in Canton, Massachusetts, in the Boston metropolitan area, at I-95; and ends near St. Johnsbury, Vermont, at I-91. It is one of three mainline Interstate highways located entirely in New England, the other two being I-89 and I-91. The largest cities along its route are Manchester, New Hampshire and Boston, Massachusetts. It also passes through the New Hampshire state capital of Concord.

For most of its length, I-93 indirectly parallels U.S. Route 3. Particularly in New Hampshire, the two highways have several interchanges with each other, as well as a concurrency through Franconia Notch State Park. I-93 follows the Southeast Expressway south of downtown Boston and the Northern Expressway from Boston to the New Hampshire state line.

Interstate 93's southern terminus is at exit 12 of I-95 in Canton, co-signed with U.S. Route 1 North. At this junction, I-95 North heads to the northwest (co-signed with U.S. Route 1 South, as well as Route 128, which begins at the interchange), to serve as the beltway around Boston, while I-95 South runs by itself southwest through Boston's southwestern suburbs toward Rhode Island.

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Wikipedia