Connecticut Route 12
Map of eastern Connecticut with Route 12 highlighted in red | ||||
| Route information | ||||
| Maintained by CTDOT | ||||
| Length | 54.46 mi (87.64 km) | |||
| Existed | 1922–present | |||
| Major junctions | ||||
| South end | I-95 / US 1 / Route 184 in Groton | |||
| North end | Route 12 at the Massachusetts state line | |||
| Location | ||||
| Country | United States | |||
| State | Connecticut | |||
| Counties | New London, Windham | |||
| Highway system | ||||
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Connecticut Route 12 is a state highway that runs from Groton north to the Massachusetts state line in Thompson.