Interstate 93: Wikis


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Interstate 93 shield
Interstate 93
Main route of the Interstate Highway System
Length: 188.68 mi (303.65 km)
Formed: 1957
South end: I-95.svgUS 1.svgMA Route 128.svg I-95/US-1/MA-128 in Canton, MA
I-90.svg I-90/Mass Pike in Boston, MA
I-95.svgMA Route 128.svg I-95/MA Route 128 in Reading, MA
I-495.svg I-495 in Andover, MA
I-293.svgNH Route 101.svg I-293/NH-101 in Manchester, NH
I-293.svgEverett Turnpike.svg I-293/Everett Tpk. in Hooksett, NH
I-89.svg I-89 in Bow, NH
I-393.svgUS 4.svgUS 202.svg I-393/US-4/US-202 in Concord, NH
North end: I-91.svg I-91 in St. Johnsbury, VT

Interstate 93 (abbreviated I-93) is an Interstate Highway in the New England section of the United States. Its southern terminus is in Canton, Massachusetts, in the Boston metropolitan area, at Interstate 95;[1] its northern terminus is near St. Johnsbury, Vermont, at Interstate 91.[2] It is one of three mainline Interstate highways whose entire route is located within the New England states.

For most of its length, Interstate 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.


Route description

  mi[3][4][5] km
MA 46.19 74.33
NH 131.39 211.45
VT 11.10 17.86
Total 188.68 303.65


Interstate 93 begins in the south at exit 12 of I-95 in Canton. I-93 begins 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 towards Rhode Island.

The first few miles of I-93 run east through Boston's southern suburbs, passing through Canton and Randolph. In Randolph, I-93 meets the northern end of Route 24 (Fall River Expressway/AMVETS Memorial Highway) at Exit 4. I-93 continues east into Braintree, interchanging with Route 3, the major freeway linking Boston to Cape Cod, at Exit 7 (known locally as the "Braintree Split"). Route 3 North joins I-93 and US-1, and the highway turns north towards Boston.

Signs in the Financial District of Boston point towards Downtown Crossing, Chinatown, Interstate 93, and Interstate 90.

Upon turning northward, the highway is known as the Southeast Expressway through Quincy, Milton and Boston's Dorchester section. After the Massachusetts Avenue connector exit, the highway officially becomes the John F. Fitzgerald Expressway, which is also known as the Central Artery, and passes beneath downtown Boston. A major intersection with the Massachusetts Turnpike/Interstate 90 (Exit 20) takes place just south of downtown Boston. After the massive interchange, motorists use the Thomas P. O'Neill Jr. Tunnel to travel underneath the city and then use Zakim Bunker Hill Bridge to cross the Charles River. Two exits are located in the tunnel, where the speed limit is 45 miles (72 km) an hour. Route 3 leaves the Artery just before the Zakim bridge via Exit 26, and U.S. Route 1 leaves the Artery just after the bridge, via Exit 27 (no southbound access). From Boston through the rest of Massachusetts, Concord, NH appears as the control city on northbound overhead signs. The Artery ends as I-93 continues north out of the city.

I-93 continues through the northern suburbs of Boston, coming to a second intersection with Interstate 95, and Route 128, which runs congruent. Travelers going north can either change over to I-95 north to eventually reach Maine, or remain on I-93 towards New Hampshire. Farther north, in Andover, I-93 meets I-495, providing access to Worcester to the southwest and New Hampshire's seacoast region to the northeast. Just south of the state line, I-93 crosses the Merrimack River into Methuen, where it interchanges with Route 213, a connector between I-93 and I-495. I-93 then crosses into New Hampshire.

In all, I-93 has 48 numbered exits in Massachusetts, although several numbers are skipped in and near Boston. Exit 48 in Methuen, just before the New Hampshire state line, is the highest-numbered exit along the entire route. Due to the highway being one of the two major Interstates that enter Boston directly (Interstate 90 is the other), nearly the entire length of the highway in Massachusetts carries four lanes in each direction. Average daily traffic volumes on I-93 in the state range from 100,000 vehicles at the New Hampshire border[6] and 150,000 vehicles at the southern end at I-95[7] to over 200,000 vehicles through Braintree and Quincy.[6]

New Hampshire

Interstate 93 travels just over 131 miles (211 km) in the Granite State; around two-thirds of the highway's total distance. Serving as the main interstate route in New Hampshire, it connects the state capital, Concord, and its largest city, Manchester. Beyond Concord are the towns of Tilton, Plymouth, and Littleton.

Between the northern end of I-293 in Hooksett and the beginning of I-89 in Bow, I-93 also carries the northern end of the Everett Turnpike. There is one toll booth along this section, at Exit 11 in Hooksett; toll for passenger cars is currently $1 (75¢ at the ramp toll booth). This is the only toll collected along the entire length of Interstate 93. I-93 in New Hampshire is also notable for having state liquor stores serve as rest areas, which are passed just after the toll plaza, traveling north. There are separate stores on both sides of the Interstate for travelers in each direction.

I-93 enters New Hampshire at Salem, where the current reconstruction of the Exit 1 ramps (leading to the Mall at Rockingham Park) along with the reduction of the freeway from 4 northbound lanes to only 2 tends to cause traffic backups. A rest area/welcome center is available on the northbound side of the freeway, directly before Exit 1. I-93 remains only two lanes wide in each direction for its first 18 miles (29 km), until the split with Interstate 293 and the junction with New Hampshire Route 101 add a third lane back to the freeway. I-93 and New Hampshire Route 101 run concurrently for about a mile before New Hampshire Route 101 heads directly east as its own freeway, serving Portsmouth and the Seacoast region. I-93 keeps three lanes of traffic in each direction until the junction with Interstate 89, when each side reduces back to two, and remains a four-lane freeway through most of its journey northward, with the only exception being the Franconia Notch section.

Northbound lane of Interstate 93/US Route 3 in Franconia Notch

It crosses the Merrimack River again before going through the state capital of Concord. In Concord, Interstate 393 heads directly east (co-signed with eastbound U.S. Route 4 and U.S. Route 202), providing another route to the Seacoast region. Westbound U.S. Route 4 joins I-93 and runs concurrently with it until Exit 17 for Penacook, about 5 miles (8.0 km) further north, before exiting westward. Continuing north, I-93 traverses the Lake Winnipesaukee tourist region and makes its way north through the heart of the White Mountains Region. I-93 passes through Franconia Notch State Park as a Super-2 parkway. This stretch carries a 45-mile-per-hour speed limit. For the trip through Franconia Notch, I-93 and U.S. Route 3 run concurrently.

Beyond Franconia Notch State Park, U.S. 3 heads northeastward through the Great North Woods region, while I-93 runs to the northwest. The final town along I-93 in New Hampshire is Littleton, served by three exits. Many motorist services are available at Exit 42. After passing through town, it crosses the Connecticut River into Vermont. The last exit along I-93 is exit 44 for Monroe, through which a rest area/welcome center is accessible to travelers on both sides of the highway.


Southbound I-93 at Hudson Road, St. Johnsbury, VT

Interstate 93 runs for only 11 miles (18 km) in Vermont, with only one numbered exit in the state before ending at the interchange with Interstate 91 in St. Johnsbury. A rest area/welcome center is located along the northbound side of the highway for travelers entering from New Hampshire. The final few miles of the Interstate, just before its terminus, actually veer to the southwest. Vehicles bound for Canada can use northbound I-91 to reach the Quebec border crossing at that Interstate's end. The portion of I-93 in Vermont parallels both U.S. Route 2 and Vermont Route 18.


Southeast Expressway

The Southeast Expressway was constructed between 1954 and 1959, at the same time the Fitzgerald Expressway (Central Artery) was built. Its northern terminus is at Exit 18 (Massachusetts Avenue) in South Boston, a former Y-interchange where the cancelled Inner Belt (I-695) was to meet with the expressway and the Central Artery. The southern terminus is at the Y-interchange (the "Braintree Split") at Exit 7 in Braintree (where Route 128 "unofficially" begins).

A section of the Expressway, beginning south of the Savin Hill overpass and ending just before the junction with Route 3, utilizes a "zipper lane", in which a movable barrier carves out a high occupancy vehicle lane in the non-peak side of the highway during rush hour.


Route of the original Central Artery, as well as other roadways affected by the Big Dig.

The Central Artery, officially the John F. Fitzgerald Expressway, was a section of highway in downtown Boston constructed in the 1950s and was originally designed as a fully elevated highway. This new highway was greatly disliked by the citizens of the city because it cut the heart of the city in half, cast long, dreary shadows and was an eyesore to the community. Because of the public outcry, Gov. John Volpe ordered the southern half of the highway redesigned so that it was underground; this section became known as the Dewey Square Tunnel. With the cancellation of the highway projects leading into the city in 1972 by Gov. Francis W. Sargent, the Central Artery gained the designation of Interstate 93 in 1974. It has also carried the local highway designations of U.S. 1 (since 1989) and Route 3.

By the mid-1970s, I-93 had outgrown its capacity and had begun to deteriorate due a lack of maintenance. State Transportation Secretary Frederick P. Salvucci, aware of the issues surrounding the elevated roadway, proposed a plan conceived in the early 1970s by the Boston Transportation Planning Review to replace the rusting elevated six-lane Central Artery with a new, more efficient underground roadway. This plan was merged with a long-standing proposal to build a third harbor tunnel to alleviate congestion in the Sumner and Callahan tunnels to East Boston; the new plan became known as the Central Artery/Tunnel Project or the Big Dig.

Route of the New Central Artery after the Big Dig
Interstate 93 through the O'Neill Tunnel

These new roadways were built during a twelve-year period from 1994 to early 2006. The massive project became the largest urban construction project ever undertaken in American history.[8] Construction on the new I-93 segment was not without serious issues: a lengthly Federal environmental review pushed the start of construction back from approximately 1990, causing many inflationary increases; funding for the project was the subject of several political battles between Pres. Ronald Reagan and Rep. Thomas P. O'Neill, Jr. Major construction on the new roadway was done while maintaining the old roadway, a step that also greatly increased the cost of the project. The original Charles River crossing, named Scheme Z, was the object to great public outcry similar to that of the building of the original highway. The outcry eventually led to the replacement of Scheme Z with a newer, more sleek cable-stayed bridge and complementing exit for Cambridge, increasing the cost even more.

In Downtown Boston, I-93 is now made up of the Thomas P. O'Neill Jr. Tunnel and the Zakim Bunker Hill Bridge, which spans the Charles River. The underground construction of the tunnel system was completed as of October, 2006; however, repairs continue to many parts of the tunnel due to water leakage because of improper construction of the slurry walls supporting the O'Neill tunnel. The former route of the above-ground Artery, so named "the other Green Monster" by Mayor Thomas Menino, was replaced mostly by open space known formally as the Rose Kennedy Greenway.

Additional improvements were done in the South Bay section of the highway: The I-90/I-93 interchange was completely redesigned, a new HOV lane extending from the zipper lane in Quincy was added and the South Boston Haul road that was constructed to bypass truck traffic around residential streets in the South End is now open to general traffic.

Hazardous cargoes are now prohibited from I-93 in Boston due to safety issues in the tunnels; these cargoes must now exit at either the Leverett Circle connector in Cambridge when traveling southbound or at the Massachusetts Ave. exit when traveling northbound.

The South Bay interchange (looking south).

Northern Expressway

The Northern Expressway was constructed from Medford to the New Hampshire border between 1956 and 1963. It was extended through Somerville and Charlestown to the Central Artery, U.S. Route 1, and the planned route of the Inner Belt between 1965 and 1973. Because it was already under construction, the highway was granted an exception to the moratorium on highway expansion inside Route 128 which was announced in 1970.[9]

I-93's original southern terminus was in Cambridge (just north of Boston) where it was to meet the Inner Belt (I-695). However, when that route was canceled, and the I-95 section into Boston was canceled and rerouted along Route 128 in the mid-1970s, I-93's route was extended an additional 18 miles (29 km) down the Central Artery (which had been signed as a concurrency of I-95/MA-3 before I-95 was rerouted) and the Southeast Expressway (what was then just Route 3) from Boston to Braintree and then west along former Route 128 to its intersection with I-95 in Canton.

In an attempt to alleviate rush-hour traffic jams, travel in the breakdown lane of I-93 is permitted on a small stretch between Exit 41 and Exit 47/48. This extra travel is permitted on the southbound side on weekdays between 6AM and 10AM, and on the northbound side between 3PM and 7PM. However, on most busy days this fails to prevent traffic delays. The Massachusetts State Police is displeased with this arrangement, citing that traffic in the breakdown lanes interferes with the ability of emergency vehicles to respond to accidents.

New Hampshire

Originally planned to follow the alignment of US 3 through Nashua along the Everett Turnpike, this was changed before construction to the current route through Salem largely due to the intervention of the owners of Rockingham Park. Exit 1 in Salem was originally designed and built with ramps allowing northbound traffic to exit to the race track and return drivers to southbound 93 only. The complementary ramps were added much later, with the southbound off ramp being a particularly tight and dangerous turn squeezed within the curve of the southbound on ramp.

An 8 mile (13 km) section of I-93 through Franconia Notch State Park, called the Franconia Notch Parkway in New Hampshire, was constructed as a two-lane freeway with a median divider. This was built as a compromise between the state's park department and highway officials. The speed limit on the Parkway is 45 mph (70 km/h). Originally, this section's signage read "U.S. 3 TO I-93" in this area complete with its own exit number sequence, but this has since been replaced by I-93 and US-3 signage along the entire length of the Parkway. The exits were renumbered to Exit 34A, 34B, and 34C.

A 59-vehicle accident briefly closed the turnpike near Derry, Exit 4, on January 11, 2009. A bus had tried to avoid an auto going out of control. There were no major injuries.[10] A 12-vehicle accident occurred the following Sunday, January 18, near the previous week's accident. The pair of accidents has led proponents of widening the highway to urge that there be no more delays in the project.[11]


Construction of Interstate 93 was completed in 1983 in Vermont. It was the last interstate to be built in the state.

Future plans


Since 1996, MassHighway has studied rebuilding the intersection of I-93 and I-95 in Woburn along the border with Stoneham and Reading.[12]

Currently MassHighway has planned on widening I-93 to a uniform four travel lanes in both directions from the current lane drop near Exit 41 in Wilmington to the New Hampshire border.[13]

New Hampshire

Current plans to widen I-93 to a uniform four travel lanes in both directions from Salem to Manchester beginning in 2008 have been put on hold. Under orders from US District Court, the NH Department of Transportation and US Department of Transportation must provide an updated environmental review. The Conservation Law Foundation (CLF) filed a lawsuit in February 2006, hoping to force any expansion plans in the area to include the restoration of commuter rail service between Manchester and Boston.[14] Currently, the Exit 1 interchange is undergoing upgrading and expansion, and other projects related to the widening, chiefly around Exits 3 and 5, are moving forward. The projects were allowed to continue due to an agreement between the state and the CLF that removed the group's opposition to construction which does not pose a threat to the environment.[15]

As part of the 2009 stimulus package, New Hampshire is set to receive several million dollars in highway construction funds. One of the projects will be widening a portion of the highway between the Massachusetts border and Manchester. Bidding is set to begin in February 2009 with construction slated to begin in late 2009 or early 2010.[16] The plans call for The New Hampshire Department of Transportation to widen the southernmost 20 miles (32 km) of I-93 to four lanes in each direction, from the current two. In addition, all five interchanges along this length will be upgraded to accommodate larger amounts of traffic, including replacing many aging bridges. Smaller construction projects at some of the interchanges are already taking place.[15] According to plans filed by the state with US DOT, the project is scheduled to run from 2009 through 2016, with work starting at the Massachusetts line and moving northward to Manchester. The project is designed with an inter-modal transit bent; new or improved park and ride facilities deployed at exits 1, 3 and 5 and a widened median strip that is designed to accommodate a planned commuter rail service between Boston and Manchester.[17]

Exit list

County Location Mile
# Destinations Notes
Norfolk Canton I-93.svg begins concurrent with US 1.svg
0.00 I-95 north / US 1 south / Route 128 north – Dedham, Portsmouth The mainline of I-93 South defaults onto I-95 North. US-1 South continues concurrent with I-95 North and Route 128 North begins at this interchange.
0.33 1 I-95 south - Providence Southbound exit and northbound entrance
1.39 2A-B Route 138Stoughton, Milton
Milton 2.86 3 Ponkapoag Trail - Houghton's Pond
Randolph 3.50 4 Route 24 south – Brockton, Fall River Fall River Expressway/Amvets Highway
4.26 5A-B Route 28Randolph, Milton
Braintree 6.71 6 Route 37 – West Quincy, Braintree, Holbrook
MA Route 3.svg joins I-93.svgUS 1.svg
7.16 7 Route 3 south – Braintree, Cape Cod Route 3 enters northbound and exits southbound.
Quincy 8.51 8 Furnace Brook Parkway - Quincy
Milton 9.33 9 Bryant Avenue - West Quincy Southbound exit and northbound entrance
9.33 9 Adams Street - Milton, North Quincy Northbound exit and southbound entrance
9.91 10 Squantum Street - Milton Southbound exit only
10.86 11A Granite Avenue - East Milton Southbound exit and northbound entrance
10.86 11B To Route 203 / Granite Avenue – Ashmont Signed as exit 11 northbound; no northbound entrance
Suffolk Boston 12 Route 3A south – Neponset, Quincy Southbound exit and northbound entrance
13 Freeport Street - Dorchester Northbound exit and southbound entrance
14 Morrissey Boulevard - JFK Library Northbound exit and southbound entrance
15 Columbia Road - Edward Everett Square, JFK Library
16 Southampton Street - Andrew Square Northbound exit and southbound entrance
18 Frontage Road, Massachusetts Avenue - Roxbury, Andrew Square
20 I-90Logan Airport, Worcester Northbound exit and southbound entrance
20B I-90 west (Mass Pike) / Albany Street Southbound exit and northbound entrance; also a ramp from I-90 west to I-93 north
20A South Station Northbound exit is part of exit 20
23 Purchase Street No northbound exit
24A Government Center Signed as exit 23 northbound
24B Route 1A north – Logan Airport Southbound exit and northbound entrance
26 Route 3 north (Storrow Drive) / Route 28Cambridge, North Station North end of Route 3 overlap; Leverett Connector
MA Route 3.svg leaves I-93.svgUS 1.svg
27 US 1 north (Tobin Bridge) – Revere North end of US 1 overlap.
northbound exit/southbound entrance only. Access to US-1 North via Exit 26 southbound.
US 1.svg leaves I-93.svg; end of Upper Deck northbound, beginning of Lower Deck southbound
Middlesex Somerville 28 To Route 99Sullivan Square, Somerville, Charlestown traffic landmark: Schrafft's building
29 Route 28 / Route 38 (Mystic Avenue) – Somerville, Everett Signed as exit 30 southbound
22.1 31 Route 16 (northbound: Mystic Valley Parkway toward Arlington
southbound: Mystic Valley Parkway (at Harvard St) toward Revere via Revere Beach Parkway)
32 Route 60Medford Square, Malden Tufts University (Medford/Somerville Campus)
23.5 33 Route 28 (Fellsway West) – Winchester Roosevelt Circle
Stoneham 25.6 34 Route 28 north – Stoneham, Melrose Northbound exit and southbound entrance
35 Winchester Highlands, Melrose Southbound exit and northbound entrance
Woburn 27.2 36 Montvale Avenue - Stoneham, Woburn
Reading 28.8 37 I-95 / Route 128Peabody, Waltham Signed as exits 37A (north) and 37B (south)
Woburn 30.3 37C Commerce Way, Atlantic Avenue
Wilmington 38 Route 129Reading, Wilmington
39 Concord Street
34.4 40 Route 62North Reading, Wilmington
34.9 41 Route 125Andover, North Andover
Essex Andover 38.0 42 Dascomb Road - Tewksbury
43 Route 133Andover, North Tewksbury Signed as exits 43A (east) and 43B (west) southbound
44 I-495Lawrence, Lowell Signed as exits 44A (north) and 44B (south)
45 River Road - South Lawrence
Methuen 46 Route 110 / Route 113Lawrence, Dracut
47.07 47 Pelham Street
48 Route 213 east – Methuen, Haverhill
MA-NH state line
Rockingham Salem 1.76 1 NH Route 28.svgNH Route 38.svg Rockingham Park Boulevard to Route 28 / Route 38 - Salem
3.00 2 NH Route 38.svgNH Route 97.svg Pelham Road to Route 38 / Route 97 - Salem, Pelham
Windham 5.78 3 NH Route 111.svg Route 111 - Windham, North Salem
Londonderry 11.66 4 NH Route 102.svg Route 102 - Derry, Londonderry
15.24 5 NH Route 28.svg Route 28 - North Londonderry
Hillsborough Manchester NH Route 101.svg joins I-93.svg
19.43 NH Route 101.svgI-293.svg Route 101 west / I-293 - Manchester Airport, Bedford, Manchester Route 101 joins northbound and leaves southbound.
20.60 6 Candia Road, Hanover Street
21.31 7 NH Route 101.svg Route 101 east - Portsmouth, Seacoast Route 101 leaves northbound and joins southbound.
NH Route 101.svg leaves I-93.svg
22.01 8 NH Route 28A.svg Wellington Road / Bridge Street to Route 28A
Merrimack Hooksett 23.86 9 US 3.svgNH Route 28.svg US 3 / Route 28 - Hooksett, Manchester
25.65 10 NH Route 3A.svg Route 3A - Hooksett
I-93.svg joins Everett Turnpike.svg
26.31 I-293.svg I-293 - Manchester, Nashua Everett Turnpike continues south on I-293.
28.66 11 NH Route 3A.svg Hackett Hill Road to Route 3A - Hooksett
Bow 35.37 I-89.svg I-89 - Lebanon, White River Junction VT
Concord 36.04 12 NH Route 3A.svg Route 3A (South Main Street) - Bow Junction I-89.svg To I-89
37.21 13 US 3.svg US 3 (Manchester Street) - Downtown Concord
38.34 14 NH Route 9.svg Route 9 (Loudon Road) - State Offices
Everett Turnpike.svg designation ends
US 4.svg joins I-93.svg
38.87 15A I-393.svgUS 4.svgUS 202.svg I-393 / US 4 / US 202 east - Loudon, Portsmouth US 4 joins northbound and leaves southbound.
38.87 15B US 202.svgUS 3.svg US 202 west to US 3 (North Main Street)
40.29 16 NH Route 132.svg NH Route 132 - East Concord
44.45 17 US 4.svgUS 3.svgNH Route 132.svg US 4 west to US 3 / Route 132 - Boscawen, Penacook US 4 joins southbound and leaves northbound
US 4.svg leaves I-93.svg
Canterbury 47.72 18 NH Route 132.svg West Road to Route 132 - Canterbury
Northfield 54.80 19 NH Route 132.svg Route 132 - Northfield, Franklin Northbound exit, southbound entrance.
Belknap Tilton 56.72 20 US 3.svgNH Route 11.svgNH Route 132.svgNH Route 140.svg US 3 / Route 11 / Route 132 / Route 140 - Laconia, Tilton
Sanbornton 60.97 22 NH Route 127.svg Route 127 - Sanbornton, West Franklin
New Hampton 69.01 23 NH Route 104.svgNH Route 132.svg Route 104 / Route 132 - New Hampton, Meredith
Grafton Ashland 75.06 24 US 3.svgNH Route 25.svg US 3 / Route 25 - Ashland, Holderness
Holderness 79.75 25 NH Route 175A.svg Route 175A to Holderness Road - Plymouth
Plymouth 80.64 26 US 3.svgNH Route 25.svgNH Route 3A.svg US 3 / Route 25 / Route 3A - Plymouth, Rumney
Campton 83.50 27 US 3.svg Blair Bridge to US 3 - West Campton
28 NH Route 49.svgNH Route 175.svg Route 49 to Route 175 - Campton, Waterville Valley
Thornton 88.29 29 US 3.svg US 3 - Thornton
Woodstock 94.78 30 US 3.svg US 3 - Woodstock, Thornton
97.05 31 NH Route 175.svg Tripoli Road to Route 175
100.20 32 NH Route 112.svg Route 112 - Lincoln, North Woodstock
Lincoln 102.23 33 US 3.svg US 3 - North Woodstock, North Lincoln
Begin Franconia Notch Parkway
US 3.svg joins I-93.svg
34A US 3.svg US 3 South - Flume Gorge Park Information Center No southbound entrance.
Franconia 110.02 34B Cannon Mountain Tramway - Old Man Historic Site
110.82 34C NH Route 18.svg Route 18 - Echo Lake Beach, Peabody Slopes, Cannon Mountain
End Franconia Notch Parkway
112.36 35 US 3.svg US 3 north - Twin Mountain, Lancaster Northbound exit, southbound entrance.
US 3.svg leaves I-93.svg
112.91 36 NH Route 141.svgUS 3.svg Route 141 to US 3 - South Franconia, Twin Mountain
115.61 37 NH Route 18.svgNH Route 142.svg Route 18 / Route 142 - Franconia, Bethlehem Northbound exit, southbound entrance.
116.39 38 NH Route 18.svgNH Route 116.svgNH Route 117.svg Route 18 / Route 116 / Route 117 - Franconia, Sugar Hill NH Route 142.svg Also signed southbound as to Route 142
Bethlehem 118.95 39 NH Route 18.svgNH Route 116.svg Route 18 / Route 116 - North Franconia, Sugar Hill Southbound exit, northbound entrance.
120.72 40 US 302.svgNH Route 18.svg US 302 / Route 18 - Bethlehem, Twin Mountain
Littleton 122.28 41 US 302.svgNH Route 18.svgNH Route 116.svg Cottage Street to US 302 / Route 18 / Route 116 - Littleton, Whitefield
124.26 42 US 302.svgNH Route 10.svg US 302 to Route 10 - Littleton, Woodsville
125.88 43 NH Route 135.svgNH Route 18.svg Route 135 to Route 18 - Littleton, Dalton
130.07 44 NH Route 18.svgNH Route 135.svg Route 18 / Route 135 - Monroe, Waterford VT
NH-VT state line
Caledonia Waterford 7.51 1 Vermont 18.svgUS 2.svg Route 18 to US 2 - St. Johnsbury
11.10 I-91.svg I-91 - St. Johnsbury, White River Junction Northbound junction only.

Auxiliary routes


  1. ^ Google, Inc. Google Maps [map]. Cartography by Tele Atlas. Retrieved on June 8, 2009.
  2. ^ Google, Inc. Google Maps [map]. Cartography by Tele Atlas. Retrieved on June 8, 2009.
  3. ^ "Office of Transportation Planning - 2005 Road Inventory". Executive Office of Transportation. Retrieved 2007-08-29.  
  4. ^ "New Hampshire DOT Route Logs". New Hampshire Department of Transportation. Retrieved 2007-08-29.  
  5. ^ "VTrans Traffic Log". Vermont Agency of Transportation. Retrieved 2007-08-29.  
  6. ^ a b "Traffic Counts for Rte. I-93". Massachusetts Highway Department. Retrieved 2008-09-14.  
  7. ^ "Traffic Counts for Rte. 1 & I-93". Massachusetts Highway Department. Retrieved 2008-09-14.  
  8. ^ "Review Begins After Big Dig Tunnel Collapse". 2006-07-12. Retrieved 2006-07-25.  
  9. ^
  10. ^ Associated Press (January 12, 2009). 59-vehicle pileup closes I-93. Burlington Free Press.  
  11. ^ Sherm Packard, NH State Representative (January 30, 2009). "Widening I-93 is now an urgent priority". The Concord Monitor. Retrieved 2009-02-06.  
  12. ^ I-93\I-95 Interchange Transportation Study
  13. ^ I-93/Lowell Junction Development Area Background
  14. ^ James Vaznis (2007-08-31). "I-93 widening in N.H. set back". The Boston Globe. Retrieved 2007-10-14.  
  15. ^ a b Davidson, Kate (2008-08-24). "I-93 projects move forward, not sideways". Concord Monitor. Retrieved 2008-09-13.  
  16. ^ JOHN DISTASO (2009-02-18). "NH hustles for its slice of stimulus pie". The Union Leader. MSNBC. Retrieved 2009-02-20. "The biggest project on its list, the $31 million widening of Interstate 93 from Salem to Manchester, will be advertised on Feb. 24, Jannelle said."  
  17. ^ NH Department of Transportaion. "Rebuilding 93:Salem to Manchester - Project background". NH DOT. Retrieved 2009-08-23.  

External links

Browse numbered routes
< I-91 MA I-95 >
< I-89 NH I-95 >
< I-91 VT VT 100 >
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

Simple English

Interstate 93 is an Interstate Highway in the United States. It goes from Canton, Massachusetts north to St. Johnsbury, Vermont. The route is 189.95 miles (305.69 km) long.[1]


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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