Interstate 89

Interstate 89 (I-89) is an Interstate Highway in the New England region of the United States traveling from Bow, New Hampshire, to the Canadian 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 substantial part of the main connection between the cities of Montreal and Boston. In Quebec the route continues as Quebec Route 133. The eventual completion of Autoroute 35 from Montreal will lead to a non-stop limited access highway route between the two cities, 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 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 U.S. routes: U.S. 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, Interstate 189, also known as the Champlain Parkway, begins from exit 13 in South Burlington and is proposed to be extended from its current terminus at US 7 as a link to downtown Burlington.[2] I-189 is the only auxiliary route of I-89.

I-89

Interstate 89
I-89 highlighted in red
Route information
Length191.12 mi[1] (307.58 km)
Existed1967–present
Major junctions
South end I‑93 / NH 3A / Everett Turnpike in Bow, NH
 
North end Route 133 to A-35 at Canadian border near Highgate Springs, VT
Location
StatesNew Hampshire, Vermont
CountiesNH: Merrimack, Sullivan, Grafton
VT: Windsor, Orange, Washington, Chittenden, Franklin
Highway system

State highways in Vermont
NH 88NHI‑93
VT 78VTI-91

Route description

Lengths
  mi km
NH[3] 60.864 97.951
VT[4] 130.254 209.623
Total 191.118 307.575

New Hampshire

MontcalmNH
New Hampshire Exit 15 (Montcalm), looking south

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 state line. 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 (5 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).

Southeast of Lebanon, signs for Exit 15 display the name "Montcalm", while Exit 16 directs travelers to "Purmort". Neither place name existed at the time of construction of the Interstate. Exits 15 and 16 were built to access portions of the town of Enfield that were otherwise cut off by the new highway. The names were chosen by Enfield's selectmen in 1960; the Purmorts were a prominent local family in the early history of Enfield, and Montcalm was a nearby settlement which had once had its own school and post office.[5] While the Purmort exit does allow access to the state road network (specifically to US 4 via Eastman Hill Road), the Montcalm exit provides access to an otherwise isolated community; every public road from the exit is a dead end, and leaving the Montcalm area by car requires getting back on I-89 at Exit 15. However, a bicycle path parallels I-89 between Exits 14 and 16 along the path of Old Route 10, allowing foot or bicycle access to the community.

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 through 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

I-89 Vermont
Interstate 89 northbound in Vermont, approaching Exit 2 in Sharon
I-89 Over Winooski bridge in VT
I-89 over the Winooski bridge in Chittenden County, Vermont
I-89 Exit 17
I-89 Exit 17 in Colchester (June 5, 2015), Chittenden County

Interstate 89 is 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 km) 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 that made the declaration 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 is not 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 (1,200 m): Camel's Hump to the south and Mount Mansfield to the north. U.S. 2 crosses the Interstate frequently, and has several interchanges with it, en route to Burlington.

Interstate 89 was unique due to one instance of its signage. Between (Vermont) Exits 9 & 10, a sign showing the distance to the next control cities in each direction was completely in metric. While there are many instances of signs being in both miles and kilometers, this was the only case of solely metric in the entire Interstate System.[6] Both signs were replaced in 2010 and show distances in miles only. (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.

ReverenceWhaleTailsSBVT 20140916 (22891703100)
The Whale Tails along I-89 northbound in South Burlington, just west of Exit 12

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 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 at Exit 13, 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 at the Highgate Springs–St. Armand/Philipsburg Border Crossing 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 Philipsburg, Quebec, as Route 133, this changes back to a two-lane road, until Autoroute 35 starts outside of Saint-Jean-sur-Richelieu 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. There are plans to extend Autoroute 35 in the next few years, creating a freeway-to-freeway connection.[7]

History

Construction

I-89 was commissioned as part of the Federal Aid Highway Act of 1956, meant to connect Norwalk, Connecticut, to the Canadian border, which is the current northern terminus of I-89. Within three years, however, opposition to the project shifted the route to becoming an Interstate that connected Boston with Montreal. The openings of major completion of the highway (smaller bits not included) are as follows:[8]

  • Montpelier to Middlesex (6.287 miles) - November 21, 1960
  • Middlesex to Waterbury (5.106 miles) - December 31, 1960
  • Waterbury to Bolton (7.049 miles) - November 20, 1961
  • South Burlington to Winooski (3.388 miles) - November 29, 1962
  • Winooski to Colchester (1.184 miles) - November 1, 1963
  • Richmond to South Burlington (8.723 miles) - November 6, 1963
  • Bolton to Richmond (6.745 miles) - October 30, 1964
  • Colchester (6.486 miles) - November 1964
  • Swanton to Highgate (5.538 miles) - 1965
  • Interstate 89 opened in most New Hampshire in November 1967.
  • The entire route was completed in 1982, although most of it was completed by the end of 1967.

Original proposal

I-89 was originally supposed to be a directly north–south route from I-95 in Norwalk, Connecticut, to its current northern terminus at the Canadian border. The route shifted after opposition came from residents and local lawmakers in interior New England who didn't want an Interstate running through their beautiful, rustic countryside and towns. One major problem that was a big part in sinking the project was the fact that the highway would have to go through the Green Mountain National Forest in Vermont.[9] Parts of the Interstate were built in Connecticut, between Norwalk and Wilton and from Brookfield to Danbury, and are currently designated as U.S. Route 7. The state of Connecticut has plans to extend the Norwalk segment to meet with the Danbury segment, but there is no timeline for the start of this project.[10] There has always been talk of building the original route of I-89, as it would bring economic development to cities like Pittsfield, Massachusetts, and Bennington, Vermont, and connect parts of the interior Northeast to New York City, but nothing has ever been formally proposed since the original proposal in the 1950s.

Other routes between Boston and Montreal

The current route of I-89 is the main artery between Boston and Montreal, two large metropolitan areas in the United States and Canada, respectively. Before I-89 was built, there was no limited-access route between the two cities. The route between the two cities is not complete, however, as Autoroute 35 in Quebec still needs to be extended south of its current terminus to connect to I-89 at the United States-Canada border. I-93 was completed to its northern terminus at I-91 in northern Vermont at about the same time as the completion of I-89 in 1967, and the Adirondack Northway (I-87) was also completed in 1967, so those routes between the two cities weren't completed either.

Exit list

StateCountyLocation[3][11]mi[3][4][11]kmExitDestinationsNotes
New HampshireMerrimackBow0.0000.000 NH 3A – Bow Junction, Concord, Hooksett, ManchesterAt-grade intersection
I‑93 to I‑393 / US 4 – Concord, Portsmouth, Manchester, BostonI-93 south is tolled Everett Turnpike
0.2230.3591Logging Hill Road – BowSigned for local traffic only
Concord2.1273.4232 NH 13 (Clinton Street) – Concord
3.8486.1933Stickney Hill RoadNorthbound exit and southbound entrance
Hopkinton6.59410.6124 US 202 / NH 9 to NH 103 – HopkintonNorthbound exit and southbound entrance
8.53313.7335 US 202 / NH 9 – Henniker, Keene, HopkintonNorthbound exit only serves US 202 / NH 9 west
10.20716.4276 NH 127 – Contoocook, West Hopkinton
Warner14.18722.8327 NH 103 – Davisville, ContoocookTo NH 127
16.78827.0188 NH 103 – WarnerNorthbound exit and southbound entrance
19.93032.0749 NH 103 – Warner, Bradford
Sutton26.87143.24510North RoadTo NH 114
New London30.91849.75811 NH 11 east (King Hill Road) – New LondonSouthern terminus of NH 11 concurrency
34.59355.67212 NH 11 west to NH 103A – New London, SunapeeNorthern terminus of NH 11 concurrency
SullivanSunapee37.02359.58312A To NH 114 – Georges Mills, SpringfieldTo NH 11
Grantham43.04069.26613 NH 10 south – Grantham, CroydonSouthern terminus of NH 10 concurrency
48.02077.28114North GranthamVia Old Route 10; southbound exit and northbound entrance
GraftonEnfield50.37681.07215Smith Pond Road / Old Route 10
51.79983.36216Eastman Hill Road – PurmortTo Whaleback Ski Area
Lebanon54.12887.11117 US 4 to NH 4A – Enfield, CanaanFormer eastern terminus of I-89 Business
56.01890.15218 NH 120 – Lebanon, HanoverAlso serves Dartmouth College and Dartmouth-Hitchcock Medical Center
58.30093.82519 US 4 / NH 10 north – Lebanon, West LebanonNorthern terminus of concurrency with NH 10; Former western terminus of I-89 Business
60.33197.09320 NH 12A – West Lebanon, ClaremontAlso serves Plainfield and Lebanon Municipal Airport
Connecticut River60.864
0.000
97.951
0.000
Vietnam Veterans Memorial Bridge
VermontWindsorHartford0.5700.917 I-91 – White River Junction, BrattleboroExit 10 on I-91
Quechee3.9306.3251 US 4 – Woodstock, RutlandRutland only appears on northbound signage, also serves Quechee and Killington
Sharon13.42021.5972 VT 132 to VT 14 – Sharon, South Royalton
Royalton22.12035.5993 VT 107 to VT 14 / VT 100 – Bethel, RoyaltonAlso serves Joseph Smith birthplace, Rutland, and Vermont Law School
OrangeRandolph30.90049.7294 VT 66 to VT 12 – Randolph
Williamstown42.95069.1215 VT 64 to VT 12 / VT 14 – Northfield, WilliamstownAlso serves Brookfield and Norwich University
WashingtonBerlin46.92075.5106 VT 63 east to VT 14 – South Barre, BarreWestern terminus of VT 63
50.29080.9347 VT 62 east to US 302 – Berlin, BarreWestern terminus of VT 62; also serves Edward F. Knapp State Airport
Montpelier52.94085.1998 US 2 to VT 12 – Montpelier, St. Johnsbury
Middlesex58.72094.5019 US 2 to VT 100B – Middlesex, MoretownAlso serves Waitsfield, Warren, and Mad River Byway
Waterbury63.760102.61210 VT 100 to US 2 – Waterbury, StoweAlso serves Bolton, Waitsfield, Warren and the Ben & Jerry's Factory
ChittendenRichmond78.410126.18911 US 2 to VT 117 – Richmond, Williston, Bolton
Williston83.960135.12112 VT 2A to US 2 / VT 116 – Williston, Essex JunctionAlso serves Hinesburg and Bristol
South Burlington87.490140.80213 I-189 west to US 7 – Burlington, Shelburne, RutlandEastern terminus of I-189; also serves Vergennes and Middlebury
88.730142.79714 US 2 – South Burlington, BurlingtonSigned as exits 14E (east) and 14W (west); serves Burlington International Airport and University of Vermont
Winooski90.480145.61315 VT 15 – Winooski, Essex JunctionNorthbound exit and southbound entrance; serves Saint Michael's College, Community College of Vermont
Colchester91.490147.23916 US 2 / US 7 to VT 15 – Winooski, ColchesterAlso serves Malletts Bay, Albany College of Pharmacy and Health Sciences, and Essex Junction
97.870157.50617 US 2 / US 7 – Lake Champlain Islands, Milton, ColchesterAlso serves New York State via ferry or bridge
FranklinGeorgia106.550171.47618 US 7 / VT 104A – Georgia Center, Fairfax, Milton
Town of St. Albans113.750183.06319 US 7 / VT 36 / VT 104 – St. AlbansAlso serves VT 105 to Enosburg and Richford
117.630189.30720 US 7 / VT 207 – St. Albans
Town of Swanton123.370198.54521 VT 78 / US 7 – SwantonAlso serves Highgate Center and New York State
Highgate129.830208.94122 US 7 south – Highgate SpringsNorthern terminus of US 7
130.254209.623 Route 133 north to A-35 – Bedford, MontrealContinuation into Quebec, Canada; future connection with A-35
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary routes

References

  1. ^ "Interstate System: Table 1". Route Log and Finder List. Federal Highway Administration. Retrieved April 12, 2008.
  2. ^ "Project Overview". CHA Companies. 2010. Retrieved March 11, 2016.
  3. ^ a b c Bureau of Planning & Community Assistance (February 20, 2015). "NH Public Roads". Concord, New Hampshire: New Hampshire Department of Transportation. Retrieved April 7, 2015.
  4. ^ a b Traffic Research Unit (May 2013). "2012 (Route Log) AADTs for State Highways" (PDF). Policy, Planning and Intermodal Development Division, Vermont Agency of Transportation. Retrieved March 7, 2015.
  5. ^ Janice Aitkin, "The towns that can't be found: Exits say Purmort and Montcalm -- but where are they?", The Nashua Telegraph, 5/22/82 p. 2
  6. ^ "I-89". Vermont Roads. Steve Alpert's Miscellanea. Retrieved September 12, 2006.
  7. ^ [1]
  8. ^ "Interstate 89". Interstate Guide. Retrieved December 3, 2018.
  9. ^ "Green Mountain National Forest". USDA. Retrieved December 3, 2018.
  10. ^ "Save Super Seven". The Committee To Extend Route 7. Retrieved December 3, 2018.
  11. ^ a b Bureau of Planning & Community Assistance (April 3, 2015). "Nodal Reference 2015, State of New Hampshire". New Hampshire Department of Transportation. Retrieved April 7, 2015.

External links

Route map:

Bolton, Vermont

Bolton is a town in Chittenden County, Vermont, United States. The population was 1,182 at the 2010 census, up from 971 in 2000. The town is home to Bolton Valley, a popular ski resort for local residents.

The principal transportation artery of the town is U.S. Route 2, which follows the north bank of the Winooski River. Interstate 89 passes through the town, parallel to Route 2, but does not have an interchange there.

Chittenden-7-1 Vermont Representative District, 2002–12

The Chittenden-7-1 Representative District is a two-member state Representative district in the U.S. state of Vermont. It is one of the 108 one or two member districts into which the state was divided by the redistricting and reapportionment plan developed by the Vermont General Assembly following the 2000 U.S. Census. The plan applies to legislatures elected in 2002, 2004, 2006, 2008, and 2010. A new plan will be developed in 2012 following the 2010 U.S. Census.

The Chittenden-7-1 District includes part of the Chittenden County town of Colchester defined as follows:

That portion of the town of Colchester north of Malletts Creek and west of Interstate 89 to the Milton town line, plus that portion of the town of Colchester east of Interstate 89.

The rest of Colchester is in Chittenden-7-2.

As of the 2000 census, the state as a whole had a population of 608,827. As there are a total of 150 representatives, there were 4,059 residents per representative (or 8,118 residents per two representatives). The two member Chittenden-7-1 District had a population of 8,903 in that same census, 9.67% above the state average.

Dartmouth–Lake Sunapee Region

The Dartmouth–Lake Sunapee area of the U.S. state of New Hampshire ranges from Bradford northwest along Interstate 89 to New Hampshire's border with Vermont at the city of Lebanon. There are two distinct regions encompassed in the Dartmouth–Lake Sunapee area. The Upper Valley region is the northwest-central area, including Lebanon, a commerce and manufacturing center, and Hanover, home of Dartmouth College, an Ivy League university. Surrounding towns are tourist and agricultural centers and bedroom communities for the main centers of activity.

The central and southeast portion of this area is Lake Sunapee and the town of Sunapee, a popular summer recreation and resort area. Many celebrities live on the shores of the lake, most notably Steven Tyler of the band Aerosmith. The "Dartmouth–Lake Sunapee" moniker is largely a convenience for visitors to the area; residents of the Upper Valley and Sunapee consider themselves to live in two separate regions of the state.

Etna, New Hampshire

Etna, originally named "Mill Village", is a small unincorporated community within the town of Hanover, New Hampshire, in the United States. It is located in southwestern Grafton County, approximately 3 miles (4.8 km) east of Hanover's downtown and 2.5 mi (4.0 km) south of the village of Hanover Center, on Mink Brook. Etna has a separate ZIP code 03750 from the rest of Hanover, as well as its own fire station, general store, ball field, playground, church, and library with adjacent conserved land and bird sanctuary. The population within Etna's ZIP Code area was 870 at the 2010 census.Commerce revolves around the Etna General Store and the Etna Post Office. The Appalachian Trail passes a mile or so north of the village before it turns northeast to cross Moose Mountain on its way to Lyme. Etna can be accessed from NH Rt. 120 via Greensboro Road or Great Hollow Road (Etna Road, north of the Lebanon exit (number 18) from Interstate 89), or from Hanover via Trescott Road (E. Wheelock Street).

Etna was the site of the 2001 murders of Dartmouth College professors Half and Susanne Zantop, dubbed the Dartmouth Murders.

Georges Mills, New Hampshire

Georges Mills is an unincorporated community in the town of Sunapee in Sullivan County, New Hampshire, in the United States. It is located in the northeast corner of the town, on a strip of land between the north end of Lake Sunapee and the south shore of Otter Pond. New Hampshire Route 11 runs through the village, leading east to New London and south to the center of Sunapee. It is also served by exit 12A on Interstate 89, 0.5 miles (0.8 km) north of the village.

Georges Mills has a separate ZIP code (03751) from the rest of the town of Sunapee.

Greek National Road 89

Greek National Road 89 is a road in East Attica, Greece. It connects Gerakas, an eastern suburb of Athens, with Sounio, via Koropi and Lavrio. Between Gerakas and Koropi it has lost importance after the opening of the Motorway 6. There are plans to upgrade the section between Koropi and Lavrio to motorway standards, by constructing junctions to replace the traffic lights and generally upgrading the road. This new road will carry the designation A61.

Interstate 189

Interstate 189 (I-189) is an auxiliary Interstate Highway in Chittenden County, Vermont, United States. The highway extends for 1.488 miles (2.395 km) from Interstate 89 exit 13 in South Burlington to US Route 7 at the Burlington city limit. I-189 is the only spur on the entire length of I-89.

Interstate 87 (North Carolina)

Interstate 87 (I-87) is a partially completed Interstate Highway in the U.S. state of North Carolina, currently the shortest designated primary interstate highway at 12.9 miles (20.8 km). The completed portion is in eastern Wake County, between Raleigh and Wendell; the majority of the completed route (approximately 10 miles (16 km)) is known as the Knightdale Bypass, while the remaining 3 miles (4.8 km) follows the Raleigh Beltline (Interstate 440). It is planned to continue northeast through Rocky Mount, Williamston and Elizabeth City, ending in Norfolk, Virginia. It is not contiguous with Interstate 87 in New York. It is signed as north-south, in keeping with the sign convention for most odd-numbered interstates, but the route goes primarily east-west, with the eastern direction aligning to the north designation.

List of business routes of the Interstate Highway System

The Interstate Highway System of the United States, in addition to being a network of freeways, also includes a number of Business Routes assigned by the American Association of State Highway and Transportation Officials. The routes are signed with green shields resembling the Interstate Highway shield. The word BUSINESS is used instead of INTERSTATE, and, above the number, where the state name is sometimes included, the word LOOP or SPUR appears. A business loop has both ends as its "parent", while a business spur has a "dangling end", sometimes running from the end of the Interstate to the downtown area.

As the main purpose of a Business Interstate is to serve a downtown area, it is typically routed on surface roads. Thus Business Interstates do not meet Interstate Highway standards. AASHTO does, however, apply similar standards as to new U.S. Routes, requiring a new Business Interstate to meet certain design standards. Business Interstates are also sometimes routed onto freeways that were once designated as mainline Interstates themselves (such as Interstate 40 Business in Winston-Salem, North Carolina and Interstate 80 Business in Sacramento, California).

Unlike auxiliary Interstate Highways, business Interstates can be repeated in several locations in the same state.

Montcalm, New Hampshire

Montcalm is an unincorporated community in the town of Enfield in Grafton County, New Hampshire, United States. It is located along a portion of old New Hampshire Route 10 that remains after most of the road was replaced by Interstate 89. The stretch of old road is only accessible from Exit 15 on I-89; in both directions from the exit the old road reaches a dead end. (Present-day Route 10 follows Interstate 89 in a concurrency through this area.) The elevation is 1,211 feet (369 m) above sea level.The name "Montcalm" was chosen by Enfield's selectmen in 1960 when the construction of I-89 was in the planning stages, to replace the name "South Notch" that had been proposed by state highway engineers. Montcalm had once been the name of a settlement in the area which had had its own post office and school.

New London, New Hampshire

New London is a town in Merrimack County, New Hampshire, United States. The population was 4,397 at the 2010 census. The town is the home of Colby–Sawyer College.

The town center, where 1,403 people resided at the 2010 census, is defined as the New London census-designated place (CDP), and is located on a hilltop along New Hampshire Route 114 north of Route 11 and Interstate 89.

North Sutton, New Hampshire

North Sutton is an unincorporated community in the town of Sutton in Merrimack County, New Hampshire. It is located at the eastern end of Kezar Lake, adjacent to Wadleigh State Park.

New Hampshire Route 114 passes through the village, leading north to New London and south to Sutton Village, South Sutton, and Bradford. Interstate 89 passes just east of the village, which can be accessed from Exit 10.

North Sutton has a separate ZIP code (03260) from other parts of the town of Sutton.

Quebec Autoroute 35

Autoroute 35 (A-35) is an Autoroute in the region of Montérégie, Quebec, Canada. Constructed in the 1960s, the A-35 links Saint-Jean-sur-Richelieu with Montreal via the A-10. The A-35 is also the primary route for traffic between Montreal and Boston, although it ends 13.4 km (8.3 mi) short of the U.S. border. South of its current terminus in Saint-Sébastien, the A-35 continues as two-lane Route 133 (which becomes four-lane divided 6.5 km (4.0 mi) north of the border) to the border. An extension of A-35 to meet Interstate 89 at Saint-Armand will complete a nearly 500 km (310 mi) limited-access highway link between Montreal and Boston. It had been scheduled to open in 2017, but construction was on hold during 2015 and 2016, so this last freeway link will be delayed until at least 2020. The MTQ has not mentioned any revised schedule.

Like many Quebec Autoroutes, the A-35 also has a name: Autoroute de la Vallée-des-Forts (Forts Valley Highway). The name refers to a chain of forts built by the French in the Richelieu Valley during the 17th and 18th centuries to defend their colonial settlements from the Iroquois. Previously, the A-35 was known as Autoroute de la Nouvelle-Angleterre (New England Motorway), referring to its role as a link between Quebec and New England.

Quebec Route 133

Route 133 is a historic and heritage road of the Montérégie region in the province of Quebec, with north/south orientation and located on the eastern shore of the Richelieu River. Its northern terminus is in Sorel-Tracy, on the south shore of the Saint Lawrence River. The southern terminus is in Saint-Armand at the United States border with Vermont, close to Highgate Springs, where it continues southward past the Highgate Springs-St. Armand/Philipsburg Border Crossing as Interstate 89. Prior to the 1970s, the portion between the international border and Saint-Jean-sur-Richelieu was known as Route 7, which served as a continuation of US 7.

Route 133 is designated as historic and called Chemin des Patriotes in honour of the Patriot Rebellion of 1837-1838.

The stretch between the US border and Saint-Jean-sur-Richelieu, where Autoroute 35 begins, is relatively busy, as it provides the main link between Boston and Montreal. Construction to extend Autoroute 35 South of Saint-Jean-sur-Richelieu to the US border by-passing Route 133 started in 2009. Construction is slated to be finished in 2017.

Trucking is prohibited on this road between Saint-Jean-sur-Richelieu and Autoroute 10 (section of 10 km) and between the junction of road 116 in Mont-Saint-Hilaire and Autoroute 20 (section of 3.5km). Controversy persists and has gained momentum in 2005 between the Ministry of Transports of Quebec and nearly 3000 residents along the road at Saint-Denis-sur-Richelieu, Saint-Charles-sur-Richelieu and Mont Saint-Hilaire, north of Autoroute 20. This controversy follows the decision of this ministry in 1995 to transfer north-south truck traffic from the roads parallel to the 133 and force it to converge, without impacts study, on chemin des Patriotes, a historical and heritage path, located on a fragile and weak soil and in the most populated area. The resulting intense heavy traffic generates noise, vibrations and pollution day and night, causing health, insomnia and safety problems to the local population.

Turkey River (New Hampshire)

The Turkey River is a 6.1-mile-long (9.8 km) stream located in southern New Hampshire in the United States. It is a tributary of the Merrimack River, which flows to the Gulf of Maine.

The source of the Turkey River is the outlet of Little Turkey Pond in Concord, New Hampshire. The river travels southeast through the campus of St. Paul's School, winding through the outskirts of Concord, and entering Bow before joining the Merrimack near the junction of Interstate 93 and Interstate 89. In May 2006 record amounts of rainfall over two days caused the Turkey River to flood the campus of St. Paul's School, forcing the school year to be ended prematurely.

Upton-Morgan State Forest

Upton-Morgan State Forest is a 21-acre (8.5 ha) state forest in Concord, New Hampshire. It has a short interpretive trail.

It is located in the southwest part of Concord off Silk Farm Road and is bordered to the northwest by New Hampshire Route 13 (Clinton Street) and to the northeast by Interstate 89. Skunk cabbage (Symplocarpus foetidus) grows in the area.

Warner River

The Warner River is a 20.3-mile-long (32.7 km) river located in central New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed.

The Warner River begins at the outlet of Todd Lake in Bradford, New Hampshire, 300 meters upstream of the confluence of the West Branch. The river flows east, receiving the outlet of Lake Massasecum, and enters the town of Warner. The small river has a long whitewater section in western Warner, passing under the Waterloo Covered Bridge next to an old railroad station, then reaches Interstate 89, after which the river flattens and meanders over gravel bars. A small waterfall at Davisville interrupts the flatwater, which resumes to the river's end, just north of the village of Contoocook, New Hampshire, in the town of Hopkinton.

New Hampshire Route 103 follows the Warner River for most of the river's length.

White River (Vermont)

The White River is a 60.1-mile-long (96.7 km) river in the U.S. state of Vermont. It is a tributary of the Connecticut River.

The White River rises at Skylight Pond south of Bread Loaf Mountain near the crest of the Green Mountains. The river flows east to the town of Granville, where it receives the outflow from the southern portion of Granville Notch. The river turns south and, followed by Vermont Route 100, flows through the towns of Hancock and Rochester. Entering Stockbridge, the river turns northeast and, followed by Vermont Route 107, flows to the town of Bethel, where the Third Branch of the White River enters from the north. The Second Branch and the First Branch of the White River also enter from the north as the river flows through Royalton.

From Royalton to the river's mouth, the valley is occupied by Interstate 89 and Vermont Route 14. Flowing southeast, the river passes through the town of Sharon and enters the town of Hartford, where it reaches the Connecticut River at the village of White River Junction.

Winooski River

The Winooski River (formerly the Onion River) is a tributary of Lake Champlain approximately 90 miles (145 km) long in the northern half of Vermont. Although not Vermont's longest river, it is one of the state's most significant, forming a major valley way from Lake Champlain through the Green Mountains towards (although not connecting in drainage to) the Connecticut River valley.

The river drains an area of the northern Green Mountains between Vermont's capital of Montpelier and its largest city, Burlington. It rises in the town of Cabot, in Washington County, and then flows southwest to Montpelier, passing through the city along the south side of downtown and the Vermont State House. From Montpelier it flows northwest into Chittenden County through Richmond, passing north of the city of Burlington. It enters the eastern side of Lake Champlain approximately 5 miles (8 km) northwest of downtown Burlington. The City of Winooski sits along the river approximately 8 miles (13 km) upstream from its mouth, on the northeastern edge of Burlington. The river was historically used for the transportation of timber in the logging heyday of Vermont during the 19th century. The valley of the river downstream from Montpelier is where both U.S. Highway 2 and Interstate 89 run between Montpelier and Burlington.

The river is one of several antecedent rivers in Vermont which predate the rise of the ancient Green Mountain range, and have cut through these mountains as they rose and eroded.

Auxiliary routes of Interstate 89
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