New Mexico State Road 166

State Road 166
NM 166 highlighted in red
Route information
Maintained by NMDOT
Length1.9 mi (3.1 km)
Major junctions
West endEnd of route near Datil
East end NM 52 near Datil
Location
CountryUnited States
StateNew Mexico
CountiesSocorro
Highway system
  • New Mexico State Highway System
NM 165 NM 167

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.