| State: | NM |
| Type: | SR |
| Route: | 320 |
| Alternate Name: | Thorpe Road |
| Map Custom: | yes |
| Map Notes: | NM 320 highlighted in red |
| Length Mi: | 2.000 |
| Direction A: | West |
| Junction: | in Doña Ana |
| Direction B: | East |
| Terminus B: | End of state maintenance in Doña Ana |
| Previous Type: | NM |
| Previous Route: | 319 |
| Next Type: | NM |
| Next Route: | 321 |
State Road 320 (NM 320), also known as Thorpe Road, is a 2miles two - lane state highway in the Mesilla Valley in Doña Ana County, New Mexico, United States, that connects New Mexico State Road 185 (NM 185) with the end of state maintenance in Doña Ana, just northeast of its interchange with Interstate 25/U.S. Route 85 (I-25/US 85).[1]
NM 320 (Thorpe Road) begins at a T intersection with NM 185, about 1.3miles southwest of Doña Ana and approximately 1350feet east of the Rio Grande. (NM 185 heads north - northwesterly along the Rio Grande toward Radium Springs and Hatch. NM 185 heads southerly toward Las Cruces and Anthony.) From its western terminus, NM 320 heads northeast for about 0.3miles before connecting with the north end of Redfox Road (which immediately enters a small gated community), followed by the north end of Strange Road (County Road 37). Then the north end of Marigold Street. After crossing the Leasburg Canal, NM 320 connects with the north end of Shenandoah Trail (street) and then has a jog of about 300feet to the north before resuming its northeastern course. Immediately after the jog, NM 320 connects with the south end of Giron Road (a dirt road), promptly crosses three sets of tracks for the BNSF Railway, and crosses Dona Ana Road (County Road 28). Roughly 0.4miles later NM 320 connects with the south end of Barela Road (County Road 40) and immediately enters the limits of the census-designated place of Doña Ana (about 1.3miles from the beginning of the highway).
Just after entering Doña Ana, NM 320 connects with the north end of Dusty Lane and then crosses Abeyta Street as the highway turns to head east. NM 320 then crosses Ledesma Drive (passing just north of the post office for the community, which is signed as "Dona Ana") and then connects with the south end of Venegas Drive and the north end of Joe Gutierrez Street. Directly thereafter, NM 320 turns to head northeast again as it connects with the north end of El Camino Real Road and passes between two gas stations (the southern of which also serves as the local stop for Greyhound Lines intercity bus service.)[2] Immediately thereafter, NM 320 reaches a diamond interchange with I-25/US 85 (Exit 9) on the southeastern corner of the limits of Doña Ana. (I-25/US 85 heads northwest toward Radium Springs and Hatch. I-25/US 85 heads southeast toward Las Cruces, Interstate 10/U.S. Route 180, Anthony, and El Paso, Texas.) Just over 200feet northeast of the northbound ramps, NM 320 reaches the "end of state maintenance" and its eastern terminus. (Thorpe Road continues northeast (very briefly as County Road 36) before crossing Del Ray Boulevard and turning south - southeast dead end in an Industrial park.)
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| 2015 | 6,369 | |
| 2014 | 7,915 | |
| 2013 | 7,832 |