| State: | CT |
| Type: | CT |
| Route: | 164 |
| Map Custom: | yes |
| Map Notes: | Map of New London County in southeastern Connecticut, with Route 184 highlighted in red |
| Length Mi: | 7.83 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Established: | 1932 |
| Direction A: | South |
| Terminus A: | in Preston |
| Direction B: | North |
| Junction: | in Griswold |
| Terminus B: | in Griswold |
| Counties: | New London |
| Previous Type: | Route |
| Previous Route: | 163 |
| Next Type: | Route |
| Next Route: | 165 |
Route 164 is a minor state highway in southeastern Connecticut, United States, running from Route 2 in Preston through the village of Preston City to Route 138 in Griswold just south of the borough of Jewett City.
Route 164 begins as Preston Plains Road at an intersection with Route 2 in the southeastern portion of the town of Preston. It runs for about three miles (5 km) through rural Preston until it reaches Preston City, where it has a junction with Route 165. From here, the road becomes known as Jewett City Road, continuing north for 2.5miles towards the town of Griswold. In Griswold, the road name changes to Preston Road, continuing north for 1.9miles until the interchange with I-395 (at Exit 22). Route 164 continues for another 0.3miles beyond the interchange to end at Route 138 just south of the borough of Jewett City.[1]
A section of Route 164 in Preston from the center of Preston City to the Griswold town line is designated a scenic road.[1]
The direct route from the village of Preston City to the borough of Jewett City was established as Route 164 in the 1932 state highway renumbering. No major changes in alignment or designation has occurred since.[2]