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Interstate 89 shield
Interstate 89
Main route of the Interstate Highway System
Length: 191.12 mi[1] (307.58 km)
South end: I-93.svgEverett Turnpike.svgNH Route 3A (new).svg I-93/Everett Turnpike/NH 3A near Concord, NH
Major
junctions:
I-91 in White River Junction, VT
North end: Route 133 to A-35 at Canadian border near Highgate Springs, VT

Interstate 89 (abbreviated I-89) is an interstate highway in the New England region of the United States travelling between Concord, New Hampshire and Highgate Springs, Vermont. As with all odd-numbered primary interstates, I-89 is signed as a north–south highway. However, the northwest-to-southeast path the road actually takes serves in two capacities: as an east–west interstate highway north of Interstate 90 in New England, and as a substantial part of the main connection between the major cities of Montreal and Boston. It is one of three Interstate highways whose entire route is located within the New England states.

Interstate 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 (91 and 93), it does not intersect any even-numbered Interstates along its route. It does, however, parallel (and interchange multiple times with) portions of three U.S. routes: U.S. Route 4 from Enfield to White River Junction; U.S. Route 2 from Montpelier to Colchester, and U.S. Route 7 from Burlington to the Canadian border.

Contents

Route description

Lengths
  mi km
NH 60.80[2] 97.89
VT 130.25[3] 209.70
Total 191.05 307.59
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New Hampshire

Interstate 89 runs for about 60.6 miles (97.5 km) in the state of New Hampshire, and is the major freeway corridor through the western part of the state. Despite being signed as a north–south freeway, its first 8 miles (13 km) actually run east–west before shifting to the northwest. The two major population centers along I-89's length in New Hampshire are Concord, at its southern terminus, and Lebanon, on the Vermont border. Mileage signs along I-89 in each direction consistently list one of the two cities. Also located along I-89 in New Hampshire are the towns of Grantham, New London and Warner.

Starting at an intersection with Interstate 93 and New Hampshire Route 3A in the town of Bow, just south of the New Hampshire capital city of Concord, the highway runs a northwest path through the Dartmouth-Lake Sunapee Region. One exit directly serves Concord (Exit 2) before the highway enters the neighboring town of Hopkinton. east–west New Hampshire Route 11 joins I-89 at Exit 11 and runs concurrently with it for about 3 miles (4.8 km) before departing at Exit 12. At Exit 13 in Grantham, New Hampshire Route 10 enters I-89, and the pair of highways form another concurrency, this one for about 15 miles (24 km). Guide signs for exit 16 southeast of Lebanon display the name "Purmort", a made-up name taken from the name of an early settler in order to meet naming conventions for interstate exits. However, a community by that name has now taken root around the exit.

The highway continues northwest, passing through Lebanon, in which the Dartmouth-Hitchcock Medical Center is located. A few miles north of this point is Dartmouth College. U.S. Route 4 parallels I-89 through Lebanon. Exits 17-20 serve the city of Lebanon and are passed in quick succession. At Exit 19, northbound New Hampshire Route 10 separates from I-89 and joins westbound U.S. Route 4 to pass through West Lebanon. The final exit in New Hampshire is Exit 20, providing access to West Lebanon's large retail district along New Hampshire Route 12A. Just after this interchange, the highway crosses the Connecticut River and enters Vermont, where it remains for the rest of its run northwest to the Canadian border.

Vermont

Interstate 89 northbound in Vermont, approaching Exit 2 in Sharon.

Interstate 89 is arguably one of Vermont's most important roads, as it is the only Interstate highway to directly serve both Vermont's capital city (Montpelier) and largest city (Burlington). Other important cities and towns located along I-89 are Barre, Waterbury, and St. Albans. Williston, which has become Burlington's big-box retail center (and one of the fastest-growing towns in the state) over the past decade, also has an interchange along I-89.

Crossing the Connecticut River into Vermont, I-89 continues the northwesterly direction it carried in New Hampshire. The Interstate intersects I-91 at an unnumbered interchange immediately upon entering Vermont. Shortly afterward, another interchange with U.S. 4 occurs. The highway begins to enter the scenic rolling hills of Vermont, turning almost due northward about 20 miles (32 kilometres) from the New Hampshire state line, and continues through the high country of central Vermont. The Interstate passes through the towns of Sharon, Royalton, Bethel, Randolph, Brookfield, and Williamstown before reaching the "twin cities" of Barre and Montpelier in the middle of Vermont. The interstate's highest point was said to be in the town of Brookfield, although the sign stating this was taken down in the late 1990s.

Another directional shift, again to the northwest, occurs while passing the interchange for Montpelier. For the next 40 miles (64 km), I-89's path isn't so much chosen as it is logical: paralleling the Winooski River and U.S. Route 2, the highway cuts through the section of the Appalachians known as the Green Mountains, and is surrounded by peaks of over 4,000 feet (1,219 m), such as Camel's Hump. U.S. 2 crosses the Interstate frequently, and has several interchanges with it, en route to Burlington.

Interstate 89 is unique due to one instance of its signage. Just beyond (Vermont) Exit 9 on both sides of the highway, about 10 miles (16 km) north of Montpelier, signs showing the distance to the next control cities are completely in metric. While there are many instances of signs being in both miles and kilometres, this is the only case of solely metric in the entire Interstate System.[4] (Interstate 19 in Arizona used to be the other "only signed in metric" interstate in the U.S., but has been changed over in recent years as the last 2 km have been changed.) Speed limit signs have always been posted in mph.

After Exit 11 in Richmond, I-89 leaves the Green Mountains to enter the Champlain Valley and a notable shift in the landscape is visible. Here, just outside of Burlington, the highway turns northward once again. Also, at this turn is where the only official auxiliary highway starts, Interstate 189. A second highway, Interstate 289, was proposed as a beltway through Burlington's northeastern suburbs in the 1980s; amidst controversy, the highway has only been partially completed as Vermont Route 289, a Super two roadway. It has yet to directly meet its parent.

Passing I-189, I-89 sees the busiest freeway interchange in the entire state, Exit 14. A full cloverleaf interchange at this exit provides access to downtown Burlington, the University of Vermont, and the retail-heavy Dorset Street, via U.S. 2. Heading north from Burlington, the landscape quickly fades from suburban development into rolling hills more characteristic of northern New England, providing a vista overlooking Lake Champlain. I-89 passes through Milton, Georgia, St. Albans, Swanton, and finally the border town of Highgate Springs. The highway ends at the Canadian border in Highgate Springs. Its final exit, which northbound motorists can use to reverse direction onto I-89 south without crossing the border, is Exit 22 - the highest exit number along the route. U.S. Route 7 has its northern terminus at this interchange as well.

Although the divided highway continues about 5 miles (8 km) into Phillipsburg, Quebec as Route 133, this changes back to a two-lane road, until Autoroute 35 starts outside of St. Jean, Quebec, and continues to Montreal. The I-89 border crossing is the only instance where an Interstate entering Quebec does not become an Autoroute upon entry. However, Autoroute 35 will be extended in the next few years, creating a freeway-to-freeway connection.[5]

Exit list

County Location Mile # Destinations Notes

New Hampshire

Merrimack Bow NH Route 3A (new).svg NH Route 3A At-grade intersection.
Southern terminus of I-89.svg I-89 designation.
0.0 North plate blue.svgTo plate blue.svgNo image.svgTo plate.svg
I-93.svgI-393.svgUS 4.svg I-93 North to I-393/US-4 - Concord, Seacoast
South plate blue.svg
I-93.svg Interstate 93 South - Manchester, Boston
0.2 1 Logging Hill Road - Bow Signed "Local traffic only."
Concord 2.1 2 NH Route 13.svg NH Route 13 (Clinton Street) - Concord
3.8 3 Stickney Hill Road Northbound exit/southbound entrance only.
Hopkinton 6.6 4 No image wide.svgNo image wide.svgTo plate.svg
US 202.svgNH Route 9.svgNH Route 103.svg US-202/NH-9 to NH-103 - Hopkinton
Northbound exit, southbound entrance only.
8.5 5 US 202.svgNH Route 9.svg US 202/NH 9 - Henniker, Keene (north); Hopkinton (south) Left exit northbound.
Access to US-202/NH-9 West only from I-89 North.
Access to I-89 North only from US-202/NH-9 West.
Access to I-89 South only from US-202/NH-9 East.
10.4 6 NH Route 127.svg NH Route 127 - Contoocook, West Hopkinton
Warner 14.2 7 NH Route 103.svg NH Route 103 - Davisville, Contoocook To NH Route 127.svg NH Route 127.
17.4 8 NH Route 103.svg NH Route 103 - Warner Northbound exit/southbound entrance only.
20.0 9 NH Route 103.svg NH Route 103 - Warner, Bradford
Sutton 27.2 10 North Road To Sutton via NH Route 114.svg NH 114.
New London 31.2 11 East plate.svg
NH Route 11.svg NH Route 11 East (King Hill Road) - New London
To NH Route 114.svg NH Route 114.
I-89.svg I-89 and NH Route 11.svg NH 11 form a 3.7-mile (6.0 km) long concurrency.
34.9 12 West plate.svgTo plate.svg
NH Route 11.svgNH Route 103A.svg NH-11 West to NH-103A - New London, Sunapee
Sullivan Sunapee 37.0 12A To plate.svg
NH Route 114.svg To NH Route 114 - Georges Mills, Springfield
To NH Route 11.svg NH Route 11.
Grantham 43.0 13 South plate.svg
NH Route 10.svg NH Route 10 South - Grantham, Croydon
Southern terminus of I-89.svg I-89/NH Route 10.svg NH 10 concurrency.
48.2 14 North Grantham Northbound entrance, southbound exit only.
Old Route 10.
Grafton Enfield 50.2 15 Smith Pond Road/Old Route 10
52.0 16 Eastman Hill Road — Purmort To Whaleback Ski Area.
Lebanon 54.1 17 No image wide.svgTo plate.svg
US 4.svgNH Route 4A.svg US-4 To NH-4A - Enfield, Canaan
56.2 18 NH Route 120.svg NH 120 - Lebanon, Hanover To Dartmouth College.
To US 4.svg U.S. Route 4.
Northern terminus of I-89.svg I-89/NH Route 10.svg NH 10 concurrency.
58.2 19 No image wide.svgNorth plate.svg
US 4.svgNH Route 10.svg US-4/NH-10 North — Lebanon, West Lebanon
60.3 20 NH Route 12A.svg NH Route 12A - West Lebanon, Claremont

Vermont

Windsor Hartford 0.6 North plate blue.svg
I-91.svg Interstate 91 North - White River Junction
South plate blue.svg
I-91.svg Interstate 91 South - Brattleboro
To plate.svg
US 5.svg To U.S. Route 5
Norwich: use US-5 North. North Hartland: use US-5 South.
Hartford (Quechee) 3.9 1 US 4.svg U.S. Route 4 - Woodstock, Rutland, Quechee (south) Artery road to Quechee, Woodstock, Rutland, and Killington Ski Resort.
Sharon 13.4 2 No image wide.svgTo plate Vermont.svg
Vermont 132.svgVermont 14.svg VT-132 to VT-14 - Sharon, South Royalton (north)
Royalton 22.1 3 No image wide.svgTo plate Vermont.svg
Vermont 107.svgVermont 14.svg VT-107 to VT-14 - Bethel, Royalton (north); Rutland (south)
No image.svgTo plate Vermont.svg
Vermont 100.svg To VT Route 100.
Orange Randolph 30.9 4 No image wide.svgTo plate Vermont.svg
Vermont 66.svgVermont 12.svg VT-66 to VT-12 - Randolph
To plate Vermont.svg
Vermont 14.svg To VT Route 14.
To Vermont Technical College.
Willamstown 43.0 5 No image wide.svgTo plate Vermont.svgTo plate Vermont.svg
Vermont 64.svgVermont 12.svgVermont 14.svg VT-64 to VT-12/VT-14 - Northfield, Williamstown
To Norwich University from points south.
Washington Berlin 46.9 6 No image wide.svgTo plate Vermont.svg
Vermont 63.svgVermont 14.svg VT-63 to VT-14 - South Barre, Barre
Western terminus of VT Route 63.
50.3 7 No image wide.svgTo plate.svg
Vermont 62.svgUS 302.svg VT-62 to US-302 - Berlin, Barre
Western terminus of VT Route 62.
Montpelier 52.9 8 No image wide.svgTo plate Vermont.svg
US 2.svgVermont 12.svg US-2 to VT-12 - Montpelier, St. Johnsbury
Northeastern Vermont via US 2.svg U.S. Route 2 East.
To Norwich University from points north.
Middlesex 58.7 9 No image wide.svgTo plate Vermont.svg
US 2.svgVermont 100B.svg US-2 to VT-100B - Middlesex, Moretown
US 2.svg parallels I-89 here.
Access to Sugarbush Resort and Mad River Glen via Vermont 100B.svg VT Route 100B from points south.
Waterbury 63.8 10 No image wide.svgTo plate.svg
Vermont 100.svgUS 2.svg VT-100 to US-2 - Waterbury, Stowe
Access to Sugarbush and Mad River Glen from points north.
Bolton Valley ski resort from points south.
To Ben & Jerry's Factory Headquarters.
Chittenden Richmond 78.4 11 No image wide.svgTo plate Vermont.svg
US 2.svgVermont 117.svg US-2 to VT-117 - Richmond, Williston (north), Bolton (south)
No image.svgTo plate Vermont.svg
Vermont 289.svg To VT Route 289.
To Bolton Valley from points north.
Williston 84.0 12 No image wide.svgTo plate.svg
Vermont 2A.svgUS 2.svg VT-2A to US-2 - Williston, Essex Junction
To Burlington International Airport from points south.
South Burlington 87.5 13 No image wide.svgTo plate.svg
I-189.svgUS 7.svg I-189 to US-7 - Shelburne, Burlington (north), Middlebury (south)
Eastern terminus of Interstate 189.
88.7 14E-W US 2.svg U.S. Route 2 - South Burlington, Burlington To Burlington, Champlain College, University of Vermont.
Access to Burlington International.
Winooski 90.5 15 Vermont 15.svg VT Route 15 - Essex Junction, Winooski, Colchester To Saint Michael's College.
Northbound exit/southbound entrance only.
Colchester 91.5 16 No image wide.svgNo image wide.svgTo plate Vermont.svg
US 2.svgUS 7.svgVermont 15.svg US-2/US-7 to VT-15 - Winooski, Colchester
97.9 17 US 2.svgUS 7.svg US-2/US-7 - Lake Champlain Islands, Milton (north); Colchester (south)
Franklin Georgia 106.6 18 US 7.svgVermont 104A.svg US-7/VT-104A - Fairfax, Georgia Center (north); Milton (south)
St. Albans 113.8 19 US 7.svgVermont 36.svgVermont 104.svg US-7/VT-36/VT-104 - St. Albans
117.6 20 No image wide.svgTo plate Vermont.svg
US 7.svgVermont 207.svg US-7 to VT-207 - St. Albans
Swanton 123.4 21 US 7.svgVermont 78.svg US-7/VT-78 - Swanton
Highgate 129.8 22 South plate.svg
US 7.svg U.S. Route 7 South - Highgate Springs
Northern terminus of US 7.
Northbound: last exit before Canada.
130.3 United States/Canada border.
Northern terminus of I-89.svg I-89.
I-89.svg I-89 north becomes Qc133.png Quebec Route 133.

Auxiliary routes

  • Interstate 289 was originally slated to go around Burlington, but it was never completed. The lone completed section of the highway is signed as Vermont Route 289.

References

  1. ^ "Route Log and Finder List - Interstate System: Table 1". FHWA. http://www.fhwa.dot.gov/reports/routefinder/table1.htm. Retrieved 2008-04-12.  
  2. ^ New Hampshire Department of Transportation Route Log
  3. ^ Vermont Agency of Transportation 2004 State Highway Traffic Log
  4. ^ "Vermont Roads - I-89". Steve Alpert's Miscellanea. http://www.alpsroads.net/roads/vt/i-89/. Retrieved 2006-09-12.  
  5. ^ http://www1.mtq.gouv.qc.ca/fr/regions/monteregie_ouest/a35.asp
Main Interstate Highways (major interstates highlighted)
4 5 8 10 12 15 16 17 19 20 22 24 25 26 27 29 30
35 37 39 40 43 44 45 49 55 57 59 64 65 66 68 69
70 71 72 73 74 75 76 (W) 76 (E) 77 78 79 80 81 82
83 84 (W) 84 (E) 85 86 (W) 86 (E) 87 88 (W) 88 (E) 89 90
91 93 94 95 96 97 99 (238) H-1 H-2 H-3
Unsigned  A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3
Lists  Primary  Main - Intrastate - Suffixed - Future - Gaps
Auxiliary  Main - Future - Unsigned
Other  Standards - Business - Bypassed
Browse numbered routes
< NH 88 NH I-93 >
< VT 78 VT I-91 >

Simple English

Interstate 89 is an Interstate Highway in the United States. It goes from Concord, New Hampshire north to Highgate Springs, Vermont at the Canada border. The route is 191.12 miles (307.58 km) long.[1]

References

Main Interstates (numbers that end in 0 or 5 are colored pink)
4 5 8 10 12 15 16 17 19 20 22 24 25 26 27 29 30
35 37 39 40 43 44 45 49 55 57 59 64 65 66 68 69
70 71 72 73 74 75 76 (W) 76 (E) 77 78 79 80 81 82
83 84 (W) 84 (E) 85 86 (W) 86 (E) 87 88 (W) 88 (E) 89 90
91 93 94 95 96 97 99 (238) H-1 H-2 H-3
Unsigned  A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3


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