Connecticut Route 12

Connecticut Route 12 is a state highway that runs between Groton and the state line in Thompson.

Route 12 marker

Route 12

Map of eastern Connecticut with Route 12 highlighted in red
Route information
Maintained by CTDOT
Length54.46 mi[1] (87.64 km)
Existed1922–present
Major junctions
South end US 1 in Groton
Major intersections
North end Route 12 at Dudley, MA
Location
CountryUnited States
StateConnecticut
CountiesNew London, Windham
Highway system
  • Connecticut State Highway System
← Route 11→ Route 14
← Route 11N.E.→ Route 12A

History

Route 12 was preceded by New England Interstate Route 12. The southern terminus of NE-12 was originally at New London, Connecticut. It travelled along present-day Route 32 (along the west bank of the Thames River) from New London to Norwich, Connecticut. In 1932, when Connecticut decommissioned its New England Routes, Route 12 swapped places with Route 32 south of Norwich. From Norwich to the Massachusetts border, Route 12 still follows its 1920s alignment.

Route description

Route 12 from Groton to Norwich is a primary route, serving the Naval Submarine Base New London and is known as the U.S. Submarine Veterans Memorial Highway. North of Norwich, Route 12 is a minor road closely paralleling Interstate 395. Route 12 goes through the following towns: Groton, Ledyard, Preston, Norwich, Lisbon, Griswold, Canterbury (0.14 miles only), Plainfield, Killingly, Putnam, and Thompson.

Route 12 in Groton near its southern end

Junction list
CountyLocationmikmDestinationsNotes
New LondonGroton0.00.0
 US 1 south – Downtown Groton
0.110.18 I-95 – New London, ProvidenceExit 85 (I-95)
0.220.35
 Route 184 east – Center Groton, Ledyard
Ledyard6.8611.04
 Route 214 east – Ledyard
Preston9.0814.61

 Route 2A west to I-395 / Conn. Turnpike – Uncasville		Western terminus of CT 2A overlap
9.3815.10
 Route 2A east – Hallville		Eastern terminus of CT 2A overlap
Norwich12.1219.51

 Route 2 west to Route 32 – Hartford		Western terminus of CT 2 overlap
12.4320.00
 Route 2 east – Stonington		Eastern terminus of CT 2 overlap
15.1924.45
 Route 97 north – Taftville
Lisbon19.6231.58 I-395 / Conn. Turnpike – Worcester, New HavenExits 21A–B (I-395/Connecticut Turnpike)
20.4332.88
 Route 138 west – Newent		Western terminus of CT 138 overlap
Griswold20.8233.51
 Route 138 east – Pachaug		Eastern terminus of CT 138 overlap
21.0533.88
 Route 201 south – Hopeville Pond State Park
WindhamPlainfield27.5044.26
 Route 14A west – Plainfield, Canterbury		Western terminus of CT 14A overlap
27.9144.92

 Route 14A east to I-395 / Conn. Turnpike – Sterling
30.3148.78

 Route 14 east to I-395 / Conn. Turnpike – Moosup		Eastern terminus of CT 14 overlap
30.5949.23
 Route 14 west – Canterbury		Western terminus of CT 14 overlap
32.1251.69
 Route 205 north – Wauregan, Brooklyn
Killingly36.1558.18

 US 6 east to I-395 – Providence		Eastern terminus of US 6 overlap
36.5158.76
 US 6 west – Hartford		Western terminus of US 6 overlap
39.4663.50
 Route 101 to I-395 – Dayville, East Killingly
42.0467.66
 Route 21 north – Putnam Heights
Putnam45.5873.35
 US 44 west – Pomfret		Western terminus of US 44 overlap
46.0274.06
 Route 171 west – Woodstock
46.2274.38

 US 44 east to I-395 – East Putnam		Eastern terminus of US 44 overlap
Thompson48.1777.52
 Route 193 north – Webster, MA
48.8878.66
 I-395 south – Norwich, New Haven		Exit 49 (I-395); partial interchange
49.8880.27
 Route 200 east – Thompson
51.9583.61
 Route 131 west – Quinebaug, Southbridge, MA
54.4687.64
 Route 12 north – Auburn, Worcester		Continues into Webster as MA 12
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. Connecticut State Numbered Routes and Roads as of December 31, 2004 Archived 2015-09-05 at the Wayback Machine (PDF)
Template:Attached KML/Connecticut Route 12
KML is from Wikidata

Media related to Connecticut Route 12 at Wikimedia Commons

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