List of Interstate Highways in Connecticut

Dwight D. Eisenhower National System of Interstate and Defense Highways

Interstate 95 marker Interstate 395 marker

Standard Interstate Highway signs in Connecticut

A map of the Interstate Highways in Connecticut

All Interstate Highways in Connecticut
System information
Length: 446.33 mi (718.30 km)
Notes: Interstate Highways in Connecticut maintained by ConnDOT
Highway names
Interstates: Interstate X
US Highways: U.S. Route X
State: State Route X
System links
  • Routes in Connecticut

Interstate Highways in the U.S. state of Connecticut run a total of 446.33 miles (718.30 km). Connecticut has three primary highways and five auxiliary highways. Most of the highways are maintained by the Connecticut Department of Transportation, with the exception of Interstate 684, which is maintained by the New York State DOT.[1]

In 1957, Connecticut received approval for the routes of its three primary Interstate highways: I-84, I-91, and I-95. This plan was extended in 1959 to include I-291 and I-491. The first Interstate Highway signs were installed on a completed section of I-91 north of Hartford in 1961. The primary interstates were all completed by 1969 after the last section of I-84 opened between Farmington and Plainville. The rest of the highways were built or renumbered to their current designations by 1994 when a five-mile section of I-291 opened 35 years behind schedule. Connecticut was one of the last states in the US to raise its maximum speed limit to 65 mph (105 km/h), which it did in 1998.[2]

Though parts of the Interstate Highway System in Connecticut were once tolled, no toll booths exist today. All tolls on I-95 were removed in 1985 after a runaway truck ran into a line of cars waiting at a booth, killing seven.[2][3]

Interstate Highways

Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-84 97.90157.55 I-84 at the New York state lineI-84 at the Massachusetts state line 1969current  
I-86 31.2750.32 I-84 in East HartfordI-86 at the Massachusetts state line 19711984 Renumbered I-84
I-87 1.412.27 I-87 at the New York state line near GreenwichI-87 at the New York state line near Armonk, New York 19611968 Renumbered I-684
I-91 58.0093.34 I-95 in New HavenI-91 at the Massachusetts state line 1959current  
I-95 111.57179.55 I-95 at the New York state lineI-95 at the Rhode Island state line 1964current Part of the Connecticut Turnpike from the New York state line at Greenwich to Waterford.
I-284 I-84 in East HartfordI-291 in South Windsor 19761983 Unbuilt due to environmental concerns
I-291 6.4010.30 I-91 in WindsorI-84 in Manchester 1994current Partially completed Hartford Beltway (northeast quadrant). Northwest quadrant cancelled; southwest quadrant of I-291 cancelled and replaced with extension of Route 9 freeway between I-91 in Berlin to I-84 in Farmington.
I-384 8.5313.73 I-84 / US 6 in East HartfordUS 6 / US 44 in Bolton 1984current Designated as I-84 from its opening in 1971 to 1984.
I-395 54.6988.02 I-95 in East LymeI-395 at the Massachusetts state line 1968current Part of the Connecticut Turnpike from Waterford to Killingly; formerly designated as Route 52
I-484 I-84 in HartfordI-91 in Hartford 19681983 Became the Conlin–Whitehead Highway and unsigned SR 598
I-491 I-91 in WethersfieldI-84 in East Hartford 19581973 Became Route 3 and parts redesignated as I-86
I-684 1.412.27 I-684 at the New York state lineI-684 at the New York state line 1968current No intersections with other roads in Connecticut; previously designated as I-87
I-691 8.9214.36 I-84 at SouthingtonCheshireI-91 at Meriden 1976current Formerly designated as US-6A, then Route 66;
  •       Former
Interstate Highways in Connecticut
I-384 in Manchester 
I-291 and the Bissell Bridge in Windsor 
I-84 and the Bulkeley Bridge in Hartford 
I-691 in Cheshire 

See also

References

  1. 1 2 "Connecticut State Numbered Routes and Roads Highway Log" (PDF). ConnDOT. 31 December 2010. Retrieved 9 February 2013.
  2. 1 2 "Timeline". Kurumi. 17 January 2013. Retrieved 10 February 2013.
  3. Satija, Neena. "Thirty years later, is Connecticut ready to reinstate tolls?". The CT Mirror. The Connecticut News Project. Retrieved 29 November 2013.
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