Marker design and table background color indicate route status and era that the route was turned back or renumbered, as indicated at right:
Currently marked routes
Routes eliminated or renumbered 1960-present
Routes eliminated or renumbered 1950-1960
Routes eliminated or renumbered 1930-1950
Routes for which there is conflicting information about their present or past existence.
71 Routes for which no record has been found so far of this number being assigned. (Post-1927 only).

NM-251

South terminus: U.S. 64-84-285 in Santa Fe
North terminus
: NM-22 in Santa Fe

Length: 1 mi.

County: Santa Fe

History: Year of creation is uncertain, since this route only shows on maps with a large Santa Fe inset. I'm guessing it existed only from the 1970s to the 1980s.

Improvements: Two-lane paved road

Comments: It ran along Camino Encantado ("Enchanted Highway"), which runs close to the north end of Santa Fe.

NM-252 South terminus: U.S. 60-84 at Taiban
Previously --- 16 miles south of U.S. 60-84 (late 1950s-88)
North terminus
: NM-209 at Ragland
Previously --- de Baca-Quay County Line (early 1950s-late 1950s); NM-86 at House (late 1950s-1988)

Length: 43.106 miles

County: de Baca, Quay

History: Established early 1950s north from U.S. 60-84, first to the county line, eventually to NM-86. Segment south of U.S. 60-84 added late 1950s. Combined with the northern part of NM-86 in the 1988 renumbering.

Improvements: Two-lane paved

Comments:

NM-253

West terminus: NM-256 S. of Roswell
East terminus
: Oasis
Previously (north) --- U.S. 380 in Roswell

Length: 5.400 miles

County: Chaves

History: Established 1970s (the date for which I have a map with a Roswell inset). Possibly dates back to 1960s. The original route looped from NM-2 (now 256) east to Oasis, then north and back west to NM-254, then north to U.S. 380. Just west of this junction, it looped north, west, and back south to U.S. 380 over what is now NM-265.

Improvements: Paved, two lane

Comments: Current east-west part of this route runs along East Grand Plains Road. The prolifieration of 2xx-numbered routes originally led me to believe that this, along with 254, were 1988 routes. Actually, they were established earlier, probably 1970s.

 NM-254 South/west terminus: NM-256 at Midway
North terminus
: U.S. 380 E of Roswell
Previously (east) --- NM-253 (1970s-88)

Length: 4.378 mi.

County: Chaves

History: Probably established same time as NM-253 (thus the number clustering). Took over the part of NM-253 from the junction with 253 to U.S. 380.

Improvements: 2-lane, paved road

Comments: Runs east from NM-256 along Brasher Road, then north along White Mill Road.

NM-255 South terminus: NM-256 SE of Roswell
North terminus
: NM-253 SE of Roswell

Length: 3.112 mi.

County: Chaves

History: Probably established in the mid-1970s along with 253 and 254. Too short and too far away from Roswell to show up on oil company maps from that era.

Improvements: Two-lane, paved

Comments: Runs east on East Crossroads Road, north on Hummingbird Lane.

Original NM-256 West terminus: NM-18 at Jal
East terminus: Texas State Line E of Jal

Length: 7 mi.

County: Lea

History: Established early 1950s. By the late 1950s, this was renumbered as the eastward extension of NM-128, its current designation

NM-256 South terminus: NM-2 S of Roswell
North terminus
: U.S. 380 in Roswell

Length: 8.320 mi.

County: Chaves

History: Renumbered from NM-2 in the mid-1980s, maybe 1988 (though it's suspicious that the other routes in the area that date to the 1970s have sequential numbers to this route). This was renumbered when the "T" in NM-2 was eliminated; formerly, NM-2 ran both up this road and to a junction with U.S. 285.

Improvements: Paved, two lane road.:

257

No history of a state route with this number found.
NM-258 West terminus: West of NM-206 at Milnesand
East terminus
: NM-206 at Milnesand

Length: 9.980 mi

County: Roosevelt

History: Year of establishment not known. It shows on the 1999 Benchmark Atlas and the 2003 New Mexico highway map.

Comment: Appears to be a road serving an oil field area. Straight-ahead junction at NM-206 becomes NM-262.

259
260

No history of state routes with these numbers found. See Link to U.S. 260
NM-261 South terminus: NM-253 at East Grand Plains
North terminus
: NM-254 SE of Roswell

Length: 4.570 mi.

County: Chaves

History: Year of establishment not known --- it only shows on the 2003 New Mexico highway map. However, though the number is consistent with a post-1988 numbering for this NMDOT district, there is also a cluster of route numbers in this range dating to the 1970s.

Improvements: Two-lane paved road

Comments: Runs north on East Grand Plains Road, east on Cedarvale Road, north on Seminole Road, west on Lovers Lane to White Mill Road.

NM-262 West terminus: NM-206 at Milnesand
East terminus
: Texas State Line near Bledsoe

Length: 17.640 mi.

County: Roosevelt

History: Established mid-1960s.

Improvements: Two-lane paved road

Comments: The straight-ahead junction with NM-206 turns into NM-258

NM-263

South terminus: NM-47 N of Tome
North/west terminus
: NM-6 near Valencia

Length: 5.720 mi.

County: Valencia

History: Date of establishment not known, probably pre-1988 due to its number not being in the 3xx series.

Improvements: Two-lane, paved

Comments: Appears to be a loop to serve residences and small farms in the area east of Belen. From south terminus, runs east, north, and then west across NM-47 to NM-6. El Cerro Loop east of NM-47, then crosses and becomes Vigil Road and El Cerro Road.

NM-264
Windshield shot, taken on SB U.S. 491 October 2009. 

West terminus: Arizona State Line (AZ-264) near Window Rock
East terminus
: U.S. 491 at Ya-ta-hey

Length: 15.945 mi.

County: McKinley

History: Originally designated NM-68. Renumbered in the mid-1960s to match the designation Arizona gave the connecting route when it became a state highway.

Improvements: Four-lane divided its entire length in New Mexico.

Comments: The major connecting route to the headquarters of the Navajo Nation at Window Rock, Arizona. There is an interchange with U.S.491 designed to give priority to traffic transitioning from 491 to 264 and vice-versa..

NM-265

North/west terminus: College Blvd. at Atkinson Avenue in Roswell
Previously --- Atkinson Avenue and U.S. 380 (until 2000)
East/south terminus: U.S. 380 at Red Bridge Road east of Roswell

Length: 4.039 mi.

County: Chaves

History: Originally the loop through northeast Roswell that was the northern extent of NM-253. Probably renumbered in 1988. Extent cut back around 2000.

Improvements: Paved two lane

Comments: Starts at Atkinson Avenue and College Blvd. (the Roswell city limits), then east on College Blvd. about 1/2 mile, north on Fowler Road about 1/2 mile, east on 19th Street about two miles, and finally south on Red Bridge Road about 1-1/2 miles to the junction with U.S. 380. The portion in the city of Roswell has been removed from the state highway system.

NM-266 West terminus: San Ignacio
East terminus
: NM-94 near Sapello

Length: 6.400 mi.

County: San Miguel

History: Probably established 1980s before 1988 (since it doesn't have a 5xx number).

Improvements: Gravel road

Comments:

NM-267 North/west terminus: U.S. 60-84 near Melrose
East terminus
: U.S. 70 in Portales

Length: 32.389 mi.

County: Curry, Roosevelt

History: Originally NM-88 between Portales and Melrose. Renumbered in1988 when 88 was divided at segments where it overlaid other routes.

Improvements: Paved two lane

Comments: Goes south from its starting point, then east where it intersects NM-330 near Floyd.

NM-268 South terminus: U.S. 60-84 near Melrose
North terminus
: NM-209 E of Ragland

Length: 27.718 mi.

County: Curry, Quay

History: Originally NM-88 between Melrose and NM-18 (now 209). Renumbered in 1988 when 88 was divided at segments where it overlaid other routes.

Improvements: Paved two lane

Comments:

NM-269 West terminus: NM-45 N of Isleta Pueblo
East terminus
: NM-314 at Pajarito

Length: 2 mi.

County: Bernalillo

History: Too short to accurately determine date of establishment, but probably pre-1988 because of its number (not a 3xx number). Appears to have been removed from the state highway system along with the portion of NM-314 north of I-25, probably early 2000s.

Improvements: Paved two lane

Comments:

NM-270 West terminus: U.S. 60-84 W of Clovis
East terminus
: U.S. 70 S of Clovis

Length: 4 mi.

County: Curry

History: Too short to accurately determine date of establishment. Could be a 1988 or later route because of the 2xx number used in this area, but it is just as likely that 270 was selected as a derivative of U.S. 70. Probably turned back to city of Clovis by around 2000.

Improvements: Paved two lane

Comments: The road went straight ahead at U.S. 70 onto NM-318 and forms a bypass loop around the south side of Clovis.

NM-271 West terminus: NM-120 at Wagon Mound
East terminus
: Mora-San Miguel County Line

Length: 24.100 mi.

County: Mora

History: Probably established 1980s, since it doesn't have a 4xx designation that would date it 1988 or later.

Improvements: Gravel

Comments: An odd road to have in the state system unless some kind of improvements are envisioned or there is a major facility like a mine out there that I can't see on the map. It isn't exactly a "road to nowhere," but appears to only serve ranches before dead-ending short of the Canadian and Mora Rivers.

NM-272

South terminus: S of Ft. Sumner State Historic Park
North terminus
: U.S. 60-84 E of Ft. Sumner

Length: 9.310 mi.

County: deBaca

History: Established late 1990s (doesn't show on anything earlier). It is an unusual road, running closely parallel to NM-212 and occupying the southern part of that route as originally established.

Improvements: Paved, two lane

Comments: By "closely parallel", I mean 1/4 mile distance between this route and NM-212. I find this one hard to understand. It serves the state historic park that commemorates the killing nearby of William "Billy the Kid" Bonney by Sheriff Pat Garrett (Silver City's best friend, as Ry Cooder sang).

NM-273 South terminus: Texas State Line at El Paso
North terminus
: NM-28 S of La Union
Previously --- NM-28 E of La Union

Length: 14.105 mi.

County: Doņa Ana

History: Created early 1950s. Around 2000, a two-mile section south of La Union was removed from the state highway system and the new spur north of this point was redesignated NM-182. The remainder of the route was consolidated with NM-319.

Improvements: Paved, two lane

Comments: Runs up the west side of the Rio Grande valley from El Paso. There is an exit from Paisano Drive (U.S. 85) in El Paso marked with this route number (on a Texas-style rectangle), but a short piece of the connecting route is in Texas.

NM-274 South terminus: NM-10 N of Cedar Crest
North terminus
: La Madera

Length: 5 mi.

County: Bernalillo

History: Appears to have existed only in the early 1950s. This road was never significantly improved and is not shown as a state highway in mid and late 1950s maps.

Comments:

NM-275 South/east terminus: NM-209 at Broadview
North/west terminus
: NM-469 N of Wheatland

Length: 14.938 mi.

County: Quay, Curry

History: Established early 1950s. Originally ran on different, unimproved roads west and south of current alignment, but moved onto current alignment by mid-1950s.

Improvements: Paved, two lane. Quay County segment was last to be paved by 1980s.

Comments: Runs about the same distance north that it does after it turns west.

NM-276

South terminus: Lower Rociada
North terminus
: NM-105 S of Mora

Length: 5.800 mi.

County: San Miguel

History: History not known. Not shown on maps. Pre-1988 by its number.

Improvements: Paved, two lane.

Comments:

NM-277 South terminus: U.S. 60-84 at Portair
North/west terminus
: NM-88
Previously --- NM-224 (early 1950s); NM-89 (1950s-1980s)

Length: 19 mi.

County: Curry

History: Established early 1950s, originally along present-day NM-311 to NM-224. Soon after extended north to NM-89 along present-day Curry County routes T and U. In the 1980s, extended west along 89 (now 288) and overlaid with NM-224 north and west to NM-88 (now NM-268). This segment probably removed from state system by 1988. Consolidated with NM-311 in 1988.

Comments:

NM-278 South terminus: NM-209 W of Grady
North terminus
:
I-40 frontage road (near exit 339) E of Tucumcari

Length: 33.536 mi.

County: Quay

History: Originally the northernmost segment of NM-88. Changed to this designation in 1988.

Improvements: Northern half gravel, southern half two-lane, paved

Comments:

NM-279 South terminus: NM-124 at Laguna Pueblo
Previously --- NM-334 E of Marquez
North terminus: Cibola County Road C-5 near Seboyeta (also spelled Cebolleta)
Previously --- NM-44 S of La Ventana

Length: 11.600 mi.

County: Cibola

History: Unfortunately, this shares a confused history with NM-334. Established early 1950s well north of its current alignment between NM-334 east of Marquez and NM-44. By the late 1950s, it had been extended south over the easternmost part of NM-334 to Paguate, and an apparently independent segment had been established from U.S. 66 at Cubero to Encinal. This latter segment was apparently combined with NM-334 by the late 1960s, and NM-279 was extended south to Laguna. By the mid-1970s, the northernmost part of the road was removed from the state highway system except for a short spur off of NM-44. (This segment of road is no longer open to the public). The northern terminus was cut back to Marquez, and finally by the late 1980s to its current terminus.

Improvements: Two-lane, paved

Comments:

280

No history of a state route with this number found.
NM-281 South terminus: Las Vegas National Wildlife Refuge
North terminus
: NM-104 E of Las Vegas

Length: 6.364 mi.

County: San Miguel

History: Established early to mid-1980s? Not shown on earlier maps, and if later would probably have a 5xx number.

Improvements: Paved, two-lane

Comments: Possibly established around the same time as NM-283, given the physical and numerical proximity.

NM-282

South terminus: NM-516 at Aztec
North terminus
: Aztec Airport

Length: 1.088 mi.

County: San Juan

History: Established early to mid-1980s? Not shown on earlier maps, and if later would probably have a 5xx number.

Improvements: Paved, two-lane

Comments: Oliver Avenue, connecting NM-516 to Aztec Airport

NM-283 West terminus: Mineral Hill
East terminus
:
I-25 frontage road (near exit 343) S of Las Vegas

Length: 13.811 mi.

County: San Miguel

History: Established late 1970s-early 1980s.

Improvements: Paved, two-lane

Comments: Possibly established around the same time as NM-281, given the physical and numerical proximity.

NM-284 West terminus: Santa Fe Airport
East terminus: NM-14 in Santa Fe

Length: 4 mi.

County: Santa Fe

History: Established mid-1960s. Removed from state system probably when Santa Fe Relief Route was completed around 2000.

Improvements: Paved, two-lane

Comments: Now marked as a Santa Fe County route (County 56).

285

State routes were not numbered this high at establishment of Link to U.S. 285
NM-286 South terminus: I-40 frontage road E of Tucumcari
North terminus
: Tucumcari Municipal Airport

Length: 0.781 mi.

County: Quay

History: Only shown on the 2003 New Mexico highway map, though it is so short that it could have existed previously and just wasn't shown.

Improvements: Paved, two-lane

287

No history of a state route with this number found.
NM-288 West terminus: NM-268 W of Field
East terminus
: NM-209 N of Clovis

Length: 27.503 mi.

County: Curry

History: The eastern leg of original NM-89, renumbered in 1988.

Improvements: Paved, two-lane

Comments:

NM-289 South terminus: NM-288
North terminus
: NM-209 N of Clovis

Length: 1.833 mi.

County: Curry

History: The original alignment for NM-18, now 209. When the sharp bend in the road south of the current 288-289 junction was bypassed, the segment north of 288 became 289 while the southerly segment became the extension of 288 to 209. This realignment, and establishment of this as a separate route, seems to have occurred late 1970s-early 1980s.

Improvements: Paved, two-lane

Comments: The designation appears to be derivative of NM-89, the former designation of 288.

NM-290 West terminus: NM-4 near Jemez Pueblo
East terminus
: Ponderosa (Vallecitos)

Length: 6.060 mi.

County: Sandoval

History: Established mid-1950s.

Improvements: Paved, two-lane

Comments:

NM-291 South terminus: NM-583 at Santa Cruz
North terminus: NM-68 at Espaņola
Previously --- U.S. 64 at Velarde

Length: 3.600 mi.

County: Rio Arriba, Santa Fe

History: Established mid-1960s. Appears to have consisted of two independent segments, one along the current alignment and the other running between NM-74 near Chamita and Velarde. The northern segment of this route is now designated NM-582.

Improvements: Partly paved, part gravel

Comments: I'm treating this as one route, even though the history is ambiguous. There are no maps that show both segments of the route at the same time.

NM-292 South terminus: NM-28 in Mesilla
North terminus
:
I-10 (exit 139) in Las Cruces
Previously --- U.S. 70 W of Las Cruces

Length: 1.450 mi.

County: Doņa Ana

History: Established late-1950s. The portion between I-10 and U.S. 70 was turned back to City of Las Cruces in 1992.

Improvements: Paved, two-lane south of I-10, four-lane north of I-10

Comments: Called Calle de El Paso (El Paso Street, as opposed to Calle del Paso, Pass Street). The portion removed from the state highway system is "Motel Blvd.", between I-10 and U.S. 70. Originally, the route ran north along what is now Roadrunner Lane and was marked "Temporary" NM-292, apparently envisioning construction of the new Motel Blvd east of that road.

NM-293 West terminus: NM-211 W of Gila
East terminus
: Mogollon Creek

Length: 4.925 mi.

County: Grant

History: Probably established 1980s.

Improvements: Paved, two-lane

Comments: Runs up the Gila River valley, opposite side of the river from NM-153.

Original NM-294 South terminus: U.S. 380 E of Tatum
North/east terminus
: Texas State Line (TX-FM 769) near Bledsoe TX

Length: 25 mi.

County: Lea

History: Established mid-1950s. Renumbered NM-125, its current designation, in the late 1950s to match the new designation Texas gave its connecting route.

Improvements: Paved, two-lane

Comments:

NM-294 South terminus: de Baca County Road 3
North terminus
: U.S. 60-84 near Taiban

Length: 15.757 mi.

County: de Baca

History: Established late-1950s as the southerly extension of NM-252. This segment renumbered 1988.

Improvements: Paved, two-lane

Comments:

295

No history of a state route with this number found.
NM-296 West terminus: U.S. 85 (4th St. NW) in Alameda
East terminus
: NM-425 (Edith Blvd.)

Length: 1 mi.

County: Bernalillo

History: On Alameda Road. Established by 1970. Probably eliminated by mid-1980s as NM-528 was extended eastward just to its south.

Improvements: Paved, two-lane

Comments:

297
298
299

No history of state routes with these numbers found.
NM-300

Taken at the junction with the U.S. 285 spur just north of I-25. The route only goes west (left) from here.

West terminus: NM-466 (Old Pecos Trail) in Santa Fe
Previously --- U.S. 85 (Cerrillos Road) in Santa Fe (1970s-1989)
East terminus: U.S. 285 spur near
I-25 (exit 290) E of Santa Fe
Previously --- U.S. 84-85-285 (Old Pecos Trail) in Santa Fe (1970s-mid 1970s)

Length: 6.605 mi.

County: Santa Fe

History: Established early 1970s. First extended west over Rodeo Road when that was improved to handle the growth of Santa Fe to the south, then extended east along old U.S. 84-85-285 when I-25 was completed. Portion through Santa Fe turned back in 1989. Now extends as far as the U.S. 285 exit.

Improvements: Paved, two-lane

Comments: Follows old U.S. 84-85-285 between the first Santa Fe exit and U.S. 285 south. The "U.S. 285 Spur" referenced above is not a formal designation but refers to the 50 yards of roadway between the I-25 ramps to U.S. 285 (where it turns to follow I-25 west) and the frontage road, which is NM-300 west of the intersection.

Travel on...

U.S. and Interstate Highways State Routes 1-25 State Routes 26-50 State Routes 51-75
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  Last updated November 2, 2009