Connecticut Route 12

Route 12
Route information
Maintained by ConnDOT
Length:	54.46 mi[1] (87.64 km)
Existed:	1922 – present
Major junctions
South end:	US 1 in Groton, CT
	US 6 in Killingly, CT
North end:	Route 12 at Thompson
Highway system
Routes in Connecticut Special Service Roads • State Roads ← Route 11 Route 14 →

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

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.

Junction list

Town	Milepost	Junction	Notes
Groton	0.0	US 1	Single interchange
	0.1	I-95
	0.2	Route 184
Ledyard	6.9	Route 214
Preston	9.1-9.4	Route 2A
Norwich	12.1-12.4	Route 2
	15.2	Route 97
Lisbon	19.6	I-395
	20.4	Route 138	Begin overlap
Griswold	20.8	Route 138	End overlap
	21.0	Route 201
Plainfield	27.5-27.9	Route 14A
	30.3-30.6	Route 14
	32.1	Route 205
Killingly	36.2-36.5	US 6
	39.5	Route 101
	42.0	Route 21
Putnam	45.6-46.2	US 44
Thompson	48.2	Route 193
	48.9	I-395
	49.9	Route 200
	52.0	Route 131

References

	Connecticut portal
	U.S. Roads portal

1. ^ Connecticut State Numbered Routes and Roads as of December 31, 2004 (PDF)

External links

• Route 12 at Connecticut Roads