Interstate 89

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Interstate 89
I-89 highlighted in red
Route information
Length	191.12 mi[1] (307.58 km)
Existed	1967–present
NHS	Entire route
Major junctions
South end	I-93 / Everett Turnpike / NH 3A in Bow, NH
Major intersections	I-91 in White River Junction, VT I-189 in South Burlington, VT
North end	R-133 at Canada–United States border near Highgate Springs, VT
Location
Country	United States
States	New Hampshire, Vermont
Counties	NH: Merrimack, Sullivan, Grafton VT: Windsor, Orange, Washington, Chittenden, Franklin
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future
New Hampshire Highway System Interstate US State Turnpikes
State highways in Vermont
← NH 88 NH → I-93 ← VT 78 VT → I-91

Interstate 89 (I-89) is an Interstate Highway in the New England region of the United States traveling from Bow, New Hampshire, to the Canada–United States border between Highgate Springs, Vermont, and Saint-Armand, Quebec. As with all odd-numbered primary Interstates, I-89 is signed as a north–south highway. However, it follows a primarily northwest-to-southeast path. The route forms a major part of the main connection between the cities of Montreal and Boston. In Quebec, the route continues as Route 133. The eventual completion of Autoroute 35 will lead to a nonstop limited-access highway route between Boston and Montreal, following I-93 south from I-89's terminus. The largest cities directly served by I-89 are Concord, the state capital of New Hampshire; Montpelier, the state capital of Vermont; and Burlington, Vermont. I-89 is one of three main Interstate highways whose route is located entirely within New England, along with I-91 and I-93 (both of which also have their northernmost pavement in Vermont).

I-89 connects smaller cities and rural areas within New Hampshire and Vermont, and maintains two lanes of traffic in each direction throughout the route. Unlike its neighboring Interstates, it does not intersect any even-numbered Interstates along its route. It does, however, parallel (and intersect multiple times with) portions of three US Routes: US Route 4 (US 4) from Enfield, New Hampshire, to Hartford, Vermont; US 2 from Montpelier to Colchester, Vermont; and US 7 from Burlington to the Canadian border. US 7 and US 2 overlap each other between Burlington and Colchester.

In Chittenden County, Vermont, I-189 begins at exit 13 in South Burlington. The Champlain Parkway, which will be one travel lane in each direction and have at-grade crossings, is being constructed between the current terminus of I-189 at US 7 and Burlington's South End as a link toward downtown Burlington.^[2] I-189 is the only auxiliary route of I-89.