New Mexico State Road 406

State Road 406
NM 406 highlighted in red
Route information
Maintained by NMDOT
Length	35.145 mi[1] (56.560 km)
Major junctions
South end	US 56 / US 64 / US 412 near Clayton
Major intersections	NM 411 NM 410 near Moses
North end	NM 456 west of Kenton, OK
Location
Country	United States
State	New Mexico
Counties	Union
Highway system
New Mexico State Highway System Interstate US State Scenic
← NM 404 → NM 408

State Road 406 (NM 406) is a 35.145-mile-long (56.560 km) state highway in Union County, New Mexico, United States. NM 406's southern terminus is at U.S. Route 56/64/412 near Clayton, and the northern terminus is at NM 456 near the Oklahoma border. The route stays entirely within Union County.