New Mexico State Road 166
# New Mexico State Road 166

State Road 166 (NM 166) is a 1.9-mile-long (3.1 km) state highway in Socorro County, New Mexico, United States. NM 166's western terminus is at the end of route east-southeast of Datil, and the eastern terminus is at NM 52 east-southeast of Datil. It runs along a portion of a former alignment of U.S. Route 60 and serves the visitor center of the Very Large Array astronomical observatory.

## Major intersections

The entire route is in Socorro County.

| Location | mi | km | Destinations | Notes |
| - | - | - | - | - |
| ​ | 0.000 | 0.000 | NM 52 | Eastern terminus |
| ​ | 1.900 | 3.058 | End of route | Western terminus |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi |||||
