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State Road 456
State Road 456
	NM 456 highlighted in red
Route information
	Maintained by NMDOT
Length	58.784 mi (94.604 km)
Major junctions
West end	NM 325 in Folsom
	NM 72 in Folsom
East end	SH-325 west of Kenton, OK
Location
Country	United States
State	New Mexico
Counties	Union
Highway system
	New Mexico State Highway System; Interstate; US; State; Scenic;

State Road 456 (NM 456) is a 58.784-mile-long (94.604 km) state highway in northeast New Mexico. NM 456's western terminus is in Folsom, New Mexico at NM 325, and the eastern terminus is at the Oklahoma state line west of Kenton, Oklahoma. At the state line, it becomes Oklahoma State Highway 325 (SH-325).

Route description

NM 456 parallels the Cimarron River for its entire length. It does not leave Union County. It is a former routing of U.S. Route 64 (US 64). Seventeen consecutive miles of it are unpaved, as per signs at each end of the unpaved stretch; their main purpose is to warn of potential impassibility in inclement weather. The stretch does have two spots of pavement, nevertheless: one about eight miles (13 km) in from the west, which is only about 100 feet (30 m) long, and one about fourteen miles (23 km) in from the west, which often confuses drivers since it is so near to the end of the advertised length (its pavement lasts about 0.5 miles (0.80 km)).

Major intersections

The entire route is in Union County.

Location	mi^[2]	km	Destinations	Notes
Folsom	0.0	0.0	NM 325 – Capulin, Des Moines	Western terminus
Folsom	0.1	0.16	NM 72 west – Raton	Eastern terminus of NM 72
	7.6	12.2	NM 551 north – Branson, CO	Southern terminus of NM 551
	30.1	48.4	NM 370 south – Clayton	Northern terminus of NM 370
	57.9	93.2	NM 406 south – Seneca	Northern terminus of NM 406
	58.8	94.6	SH-325 east – Kenton	Continuation into Oklahoma
1.000 mi = 1.609 km; 1.000 km = 0.621 mi