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).

401

No history of a state route with this number found.
NM-402
Photo taken WB
U.S. 87, April 2009
South terminus: U.S. 54 at Nara Visa
North terminus
: U.S. 87 at Clayton

Length: 62.852 miles

County: Quay, Union

History: Originally part of NM-18. Renumbered in 1988.

Improvements: Two-lane paved

Comments: The other pieces of former NM-18 are NM-206 and 209 south of Tucumcari, and 406 north of Clayton.

NM-403 South terminus: NM-44 at Counselor
North terminus: Junction of county roads near Rio Arriba-San Juan County line (?)

Length: ~25 miles

County: Sandoval, Rio Arriba

History: Dates of existence not clear. Probably established pre-1988 because of number outside the current 5xx pattern for this area, but post-1980 because it doesn't show on any maps of that area. Likely removed from state system, possibly by mid-1990s since it does not show on 1996 state map.

Improvements: Gravel and dirt

Comments: This route was called to my attention by reader "GS", who pointed out that it shows on the current Mapquest and USGS maps. I viewed these, and it appears this route runs along the path of 1930s original NM-98 and NM-44 through Caņon Largo. It also is shown on MS Mappoint (but also with its current county designation; my 1999 Benchmark Atlas shows it as Rio Arriba County 379). GS, who drove the road, points out that it mainly serves natural gas field assets.

NM-404

West terminus: NM-460 N of Anthony
Previously --- NM-28 S of Chamberino (1980s?-2000s); NM 460 (1960s), NM-478 (1970s)
East terminus
: NM-213 W of Chaparral
Previously --- NM-213 (1960s-80s); Chaparral (1980s-?)

Length: 9.700 miles

County: Doņa Ana

History: Established early 1960s between NM-460 and NM-213. Extension east to Chaparral by 1990s, west to NM-28 not shown on older maps but probably by 1980. Has since been cut back to its original length. The former segment of this route between NM-28 and the Rio Grande is now NM-186.

Improvements: Paved, two lane

Comments: I verified the truncation of this route and the identity of the westernmost part of the former route in the field.

    NM-405 South terminus: NM-225 near Anthony
North terminus
: NM-404

Length: 2 mi.

County: Doņa Ana

History: Year of establishment cannot be determined because the route is too short to show on 1960s and 70s era road maps. Likely established by 1980. From all appearances (no marking, not showing on latest NM map) it has been removed from the state highway system.

Improvements: 2-lane, paved road

Comments: No longer marked, and its southern terminus is removed from the state highway system, so it's a pretty good bet this route is gone (probably at the same time as the western end of 404).

NM-406 South terminus: U.S. 56-64-412 NE of Clayton
North terminus
: NM-456 near Kenton, OK

Length: 35.145 mi.

County: Union

History: Renumbered from NM-18 in 1988.

Improvements: 2-lane, paved road

Comments: The most northerly of the former segments of NM-18.

407

No history of a state route with this number found.
NM-408 South terminus: I-25 (exit 156) at Lemitar
North terminus
: Frontage road FR2512 at Chamizal

Length: 6.017 mi.

County: Socorro

History: Not possible to determine this route's date of establishment because it is too short. Probably around 1980.

Improvements: Two-lane, paved

Comments: This route is not old U.S. 85, at least not as it existed in the 1950s. It appears to be a road constructed close to the Rio Grande east of old U.S. 85, and serves Polvadera.

NM-409 South terminus: Bottomless Lakes State Park (junction with itself in a loop)
North terminus
: U.S. 380 E of Roswell

Length: 13.2 mi.

County: Chaves

History: Established around 1970 between Bottomless Lakes State Park and U.S. 380.

Improvements: Paved, two lane road.

NM-410 West terminus: NM-406 near Moses
East terminus
: Oklahoma State Line (county road)

Length: 1.942 mi.

County: Union

History: Established early 1990s.

Improvements: Two lane, paved

Comments: The state route log shows the eastern terminus as the NM-TX state line, but this is obviously an error.

NM-411 West terminus: NM-406 N of Clayton
East terminus
: Union County Road A77

Length: 3.965 mi.

County: Union

History: Established early 1990s

Improvements: Two lane, paved

Comments: Apparently does not connect to U.S. 56-64-412 just two miles south of its east terminus.

NM-412

See also
Link to U.S. 412

South terminus: Bluewater Lake State Park
North terminus
: NM-122 near
I-40 (exit 53) at Prewitt

Length: 6.790 mi

County: Cibola

History: Established late 1950s on an alignment that intersected U.S. 66 a few miles west of Prewitt. The road was realigned in the mid-1960s, possibly to avoid the need for a second interchange on I-40.

Improvements: Originally gravel, now paved two-lane

Comment: It's interesting that this route was not renumbered when U.S. 412 was extended into New Mexico in the 1990s. The New Mexico route log does not even mention U.S. 412, not surprising since it is overlaid on U.S. 56 in the state.

NM-413 South terminus: NM-404
North terminus
: NM-226 W of Berino

Length: 4 mi

County: Doņa Ana

History: Year of establishment not known, but probably 1970s-80s at the same time as NM-404 being extended west and NM-405 being established in the area. Most likely removed from state highway system as of 2004, along with 405 and the west end of 404.

Improvements: Paved, two lane

Comment: Another in the cluster of low 400-number routes in the lower Rio Grande Valley near the Texas border. This was almost a continuous route with NM-405 with only a short jog on NM-404, but was probably never numbered as the same route. Not shown on the 2003 NM road map and not marked as of 2004.

NM-414 West terminus: W of Ojo Caliente
East terminus
: U.S. 285 at Ojo Caliente

Length: 0.350 mi

County: Rio Arriba

History: Year of establishment not known due to its very short length, probably pre-1988.

Improvements: not known.

Comment: Appears to run from the village of Ojo Caliente to the Rio Ojo Caliente.

NM-415 West terminus: W of Chamberino
East terminus
: NM-28 at Chamberino

Length: 2 mi

County: Doņa Ana

History: Year of establishment not known, probably around the time the other 400-level routes in this area were established. Probably removed from state system by 2003.

Improvements: Paved, two lane

Comment: A short dead-end road that doesn't connect to any roads leaving the area. Probably serves a small residential or agricultural area.

NM-416 West terminus: NM-273 S of La Union
East terminus: NM-319 (now NM-273)

Length: 2 mi

County: Doņa Ana

History: Again, not possible to precisely date this road. My guess, like the other 400 routes in this area, is mid-1970s to 1980. Removed from state highway system in early 2000s.

Improvements: Paved, two lane

Comment: Cassad Road. Does not show on the 2003 New Mexico highway map (at that level of detail, at most the road, not the shield, would be indicated), and not marked in 2004. Likely removed from the state highway system along with the removed segment of NM-273.

NM-417 West terminus: NM-406 at Causey
East terminus: Texas State Line

Length: 4.750 mi

County: Union

History: Established 1989 as exchange for NM-426.

Improvements: Gravel

Comment: Does not connect to a marked route in Texas.

NM-418 West terminus: I-10 (Exit 68) W of Deming
East terminus
: Spruce Street in Deming

Length: 14.069 mi

County: Luna

History: Old U.S. 80, renumbered in the late 1960s with the opening of the segment of I-10 near Deming. The east end has probably been realigned slightly, since I-10 opened west of Deming before it completely bypassed Deming.

Improvements: Two-lane paved road

Comment:

NM-419 West terminus: NM-104 at Trementina
East terminus: NM-39 near Mosquero

Length: 48.752 mi.

County: San Miguel, Harding

History: Established 1988 when the segment of NM-65 east of NM-104 was renumbered.

Improvements: Two-lane paved road

Comments:

NM-420 

West terminus: NM-102
East terminus
: NM-402 S of Amistad

Length: 30.473 mi.

County: Harding, Quay

History: The easternmost segment of former NM-65, renumbered in 1988.

Improvements: Gravel and two lane paved

Comments:

NM-421

West terminus: NM-402 N of Stead
East terminus
:
Texas State Line (TX-102) E of Sedan

Length: 8.101 mi.

County: Union

History: The eastern segment of former NM-102, renumbered in 1988.

Improvements: Paved two lane

Comments: Yet another instance from the 1988 renumbering where the adjoining state route number no longer matches the new New Mexico route number. It would have been just as logical to have kept this segment as 102 and redesignated the other section.

NM-422 South terminus: NM-500 S of Albuquerque
Previously ---
NM-361 (Broadway at Menaul Blvd.) in Albuquerque (1950s-early 1960s)
North terminus
: U.S. 85 N of Bernalillo
Spur route: U.S. 85 to I-25/NM-422 along Roy Avenue N of Albuquerque

Length: 28 mi.

County: Bernalillo, Sandoval

History: Established mid to late-1950s, probably originally planned pre-interstate system as a bypass route for Albuquerque. However, it became the alignment for I-25, and NM-422 was marked along the completed interstate for a few years. Number removed from state highway system after the segment of I-25 between Bernalillo and Algodones was completed in the 1980s. In addition, a spur route along Roy Avenue extended west to U.S. 85 (though I never saw this route marked as NM-422) in the 1960s and 70s. This later became NM-556 (its current designation) and was extended east along Tramway Blvd. to the tram station.

Improvements: Originally an expressway from U.S. 85 to north of Albuquerque, then two or four lane urban street into the city. From Bernalillo south, the route was upgraded to freeway in the early 1960s and extended south to Rio Bravo Blvd. (NM-500) by the late 1960s. The expressway segment was finally upgraded to interstate freeway standards by the late 1970s.

Comments: This route was marked along I-25 in Albuquerque, probably until the last freeway section of I-25 was completed north to U.S. 85 in the early 1980s when the need for the route was eliminated.

NM-423 West terminus: Golf Course Road in NW Albuquerque
East terminus
: NM-556 (Tramway Blvd.) in NE Albuquerque

Length: 17.000 mi.

County: Bernalillo

National Highway System on current and proposed route

History: Probably established late 1970s --- I seem to remember seeing this route number on a map from that time. However, it was probably only marked as the route was constructed.

Improvements: Urban freeway between Coors Blvd (NM-448) and Jefferson Blvd., just west of I-25. remainder of route west of I-25 is urban expressway, four lane urban street east of I-25.

Comments: Entire route is Paseo del Norte. Originally, this road across the then-undeveloped part north of Albuquerque (like it was when I lived there in the 1970s) before it became a state highway was Los Angeles Avenue. Ultimate plan is to connect to NM-345 (Unser Blvd.) on the west. This road provides an important river crossing and access to the fast-growing NW Albuquerque and Rio Rancho area. There is a SPUI (single-point urban interchange) at Coors Blvd. (NM-448).

424

No history of a state route with this number found.
NM-425 South terminus: NM-98 in Albuquerque
North terminus
: NM-296 N of Albuquerque

Length: 3 mi.

County: Bernalillo

History: Established early 1960s along Edith Blvd. from the point where NM-98 turned west onto Osuma Road, north to Alameda Road. Probably removed from state highway system by 1990 as the new network of state-developed roads was constructed in the North Valley.

Improvements: Paved two lane

Comments:

NM-426 West terminus: Sofia
East terminus
: U.S. 64-87 at Mt. Dora

Length: 22 mi.

County: Union

History: Established mid-1950s. Removed from state highway system 1989 as exchange for new NM-417.

Improvements: Gravel road

Comments:

NM-427

Photo taken at Country Club Drive and Florida Avenue in Deming.

West terminus: NM-418 W of Deming
East terminus:
BL I-10 E of Deming

Length: 3.980 mi.

County: Luna

History: I have never seen this on a map, either print or on-line. I only found it by driving around Deming. It was established in 1953, but was never entered into the state's route data base. It was given this definitive routing in 1999.

Improvements: Two lane paved

Comments: Follows Florida Avenue across the south side of Deming and Country Club Drive north to BL I-10 (old U.S. 80).

NM-428 South terminus: Lake Avalon
North terminus
: NM-239 N of Carlsbad

Length: 2 mi.

County: Eddy

History: Dates of this route's existence not known, since it only shows up on on-line maps. It appears to have been associated with NM-239, which ran on Canal Street N from U.S. 285 in Carlsbad. That route was probably removed from the state highway system with the opening of the Relief Route on the north side of Carlsbad, and so I speculate this route was removed at the same time. It probably only existed 1980s-90s.

Improvements: Probably two lane paved

Comments: It is likely this road was built as a recreational access to Avalon Lake.

429

No history of a state route with this number found.
NM-430 South terminus: U.S. 70 at Fairacres (W of Las Cruces)
North terminus
: U.S. 85 N of Las Cruces

Length: 6 mi.

County: Doņa Ana

History: Appears to have been established in the late 1950s. It was probably removed from the state highway system prior to 1980.

Improvements: Two lane paved

Comments: This ran from U.S. 85 southwest to U.S. 70, and was known locally as Fairacres Road. It is now called Shalem Colony Trail (Doņa Ana County C-52).

NM-431 South terminus: NM-265 E of Roswell
Previously --- (west) NM-447 (Country Club Road) NW of Roswell (1970s-80s)
North terminus:
Berrendo Road

Length: 1.710 mi.

County: Chaves

History: First appears on a Roswell inset map from the 1970s. The Roswell inset of the current New Mexico highway map shows its current extent. The removal from the highway system of the remainder may have occurred in the 1980s or later.

Improvements: Two lane paved

Comments: Original extent was a loop of sorts around the north side of Roswell. It began at Union Avenue and W. Country Club Road; ran north on Union to Berrendo Road, then east across U.S. 285 to La Jara Road. From there it ran south and southwest along La Jara and Urton Roads to 19th St. (old NM-253, now NM-265). The current extent is La Jara and Urton Roads south of Berrendo.

NM-432 South terminus: NM-104 W of Conchas
North terminus
: Conchas Lake (west end)

Length: 1.000 mi.

County: San Miguel

History: Likely established 1988.

Improvements: Paved two lane

Comments:

NM-433 South terminus: NM-104 at Conchas
North terminus
: Conchas Lake State Park

Length: 2.900 mi.

County: San Miguel

History: Likely established as a state highway in the 1970s, originally an extension of NM-129, renumbered in 1988.

Improvements: Paved two lane

Comments:

NM-434 South terminus: NM-518 at Mora
North terminus
: U.S. 64 at Agua Fria

Length: 36.843 mi.

County: Mora, Colfax

History: From Black Lake to Agua Fria, probably a 1920s state highway (NM-62, renumbered 120 in 1930). NM-38 was extended south from Agua Fria to Mora in the mid-1930s, replacing NM-120 on the northerly part. Renumbered in 1988 to eliminate concurrent section with U.S. 64 and NM-38.

Improvements: Paved two lane

Comments:

NM-435 South terminus: S of Lower San Francisco Plaza
North terminus
: NM-12 at Reserve

Length: 5.206 mi.

County: Catron

History: Established around 1980

Improvements: Paved two lane

Comments: Runs along the San Francisco River south of Reserve, turns into NFS roads and heads up into the area north of the Gila Wilderness.

NM-436 South terminus: NM-187 at Garfield
North terminus
: NM-187 at Derry

Length: 3.541 mi.

County: Doņa Ana

History: Route is so short that it does not show on most maps and thus date of establishment not known (likely pre-1988)

Improvements: Paved two lane

Comments: Runs along the Rio Grande where NM-187 (old U.S. 85) takes a more easterly route.

437

No history of a state route with this number found.
NM-438 West terminus: Cottonwood Creek
East terminus
: NM-2 S of Lake Arthur

Length: 10.016 mi.

County: Chaves

History: Route is so short that it does not show on most maps and thus date of establishment not known (likely pre-1988)

Improvements: Paved two lane

Comments:

439

No history of a state route with this number found.
NM-440 South terminus: What is now Roosevelt County 35 S of Elida
North terminus: U.S. 70 at Elida or possibly NM-116/114 just S of Elida

Length: 20 mi.

County: Roosevelt

History: Probably created early 1960s, removed from highway system by early 1980s

Improvements: Paved two lane

Comments: This was an extension of NM-330 (so it's curious it wasn't just called that since NM didn't have a problem with concurrent state routes at that time) that shows on Gousha and other oil company maps from the early 1960s on. It shows only one official state map in my collection (1977).

441

No history of a state route with this number found.
NM-442 South terminus: NM-518 at La Cueva
North terminus: NM-120 at Ocate

Length: 21.375 mi.

County: Mora

History: Originally the southernmost segment of NM-21. Number changed in 1988 when NM-21 was rerouted east to Springer.

Improvements: Paved two lane

Comments:

NM-443 West terminus: NM-28 N of La Union
East terminus: Texas State Line

Length: 3 mi.

County: Doņa Ana

History: Probably created 1970s, removed from highway system early 2000s.

Improvements: Paved two lane

Comments: Ran along West Side Road from NM-28 into the area of Texas where the Rio Grande has shifted from the state line. No longer marked and probably removed from highway system.

444

No history of a state route with this number found.
NM-445 South terminus: I-25 (exit 426) at Maxwell
North terminus
: U.S. 64 W of Raton Municipal Airport

Length: 12.255 mi.

County: Colfax

History: Originally U.S. 85, renumbered around 1988 when that route was essentially eliminated.

Improvements: Paved two lane

Comments: The exit from I-25 at Maxwell actually indicates NM-505, a route that intersects NM-445 a mile north of the interchange.

NM-446 South terminus: NM-97 E of Watrous
North terminus
: Valmora

Length: 0.250 mi.

County: Mora

History: First shows on 1988 official highway map and the number is consistent with route numbering effective that year.

Improvements: Not known

Comments: See also NM-450

NM-447 South terminus: U.S. 70-380 at Roswell
North terminus
: U.S. 70-285 N of downtown Roswell

Length: 4 mi.

County: Chaves

History: Established probably 1970s, removed from state highway system by the 1980s (though I have no evidence to establish a date).

Improvements: Urban streets

Comments: North on Sycamore Avenue to Country Club Road, then east.

NM-448

Photo taken at junction NM-528 in Rio Rancho, October 2009
South terminus Central Avenue at Coors Blvd.? See Comments section below
Previously --- U.S. 66/
BL I-40 (Central Avenue) (1950s-2000); St. Josephs Road (1.5 miles N of I-40 exit 155) in Albuquerque
North terminus
: NM-528 at Rio Rancho
Previously --- NM-46 (Corrales Road) (1950s-88)

Length: 13.010 mi.

County: Bernalillo, Sandoval

History: Established late 1950s from U.S. 66 to NM-46, serving the then mostly undeveloped West Mesa area of Albuquerque. In 1988, took over the northern segment of NM-46, and around 2000 was truncated on the south end as part of the road was turned back to the city. NMDOT reassumed jurisdiction over the south end of the route in 2010.

Improvements: Urban four-lane divided road S of Alameda Blvd., two lane road north of there.

Comments: This runs along Coors Blvd. Previously, it was known as Coors Road and, originally, Mesa Road. The name change to Boulevard occurred when Coors Blvd. south of Central Avenue (NM-45) was realigned to run into Coors Road. It appeared this state highway was being truncated northward from I-40 as NM-345 (Unser Blvd.) was extended. But, in October 2010, the Highway Commission approved an exchange between NMDOT and the city of Albuquerque whereby the city took jurisdiction over Unser Blvd. (NM-345) and NMDOT took control over Coors Blvd. between Old Coors and St. Josephs. The Comission minutes did not indicate what changes in route markings, if any, would occur. It's possible that 448 would extend south to Central and then become 45 with an end-to-end junction, but it is also possible (and would make sense) that the two routes will be consolidated under one number. This listing will be updated once more information is available.

NM-449

South terminus: 5 miles S of Hope (about the Armstrong Road/Rockin R Red Rd intersection)
North terminus: U.S. 82 at Hope

Length: 5 mi.

County: Eddy

History: May have only existed late 1970s for a short time

Improvements: Paved two-lane road

Comments: Only reference to this road is the 1977 official map (appears to be pencilled in on the original). It is currently Armstrong Road.

NM-450 South terminus: NM-97 E of Valmora
North terminus
: N of Valmora

Length: 0.349 mi.

County: Mora

History: Not known. Number is consistent with a post-1988 creation.

Improvements: Not known

Comments: See also NM-446.

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  Last updated December 11, 2010