New Mexico Truck Bans & Hazmat Routes

Where New Mexico keeps trucks out

New Mexico has no cars-only parkways and no enclosed hazmat tunnel, but it is a heavy radioactive corridor. Transuranic loads bound for WIPP near Carlsbad run I-40 across the state, then US 285 south. For radioactive and HRCQ shipments the state requires the designated relief and bypass routes around cities, and the posted city truck routes may not be used (18.20.9 NMAC). Everything else follows 49 CFR 397 and the FMCSA registry. Legal height is 14 ft.

Key restrictions

• No parkways or enclosed hazmat tunnels, but a major radioactive corridor
• WIPP-bound loads run one of four designated routes: I-25 from Colorado, I-40 from Arizona, I-40 then US 54 from east Texas, or US 285 north from south Texas, all joining US 285 and US 62/180 into Carlsbad (18.20.9 NMAC)
• Radioactive/HRCQ shipments must use designated relief and bypass routes around cities, not the posted city truck routes (18.20.9 NMAC)
• Everything else follows 49 CFR 397 and the FMCSA registry; legal height 14 ft

• Parkway / road ban: No cars-only parkways. The main routing rule is the statewide radioactive/WIPP route designation, which sends those loads onto relief and bypass routes around cities.
• Hazmat: No enclosed-tunnel ban, but strict radioactive routing. New Mexico designates four preferred routes to WIPP near Carlsbad plus a Los Alamos route: from Colorado, I-25 south through Raton, Springer and Las Vegas to US 285; from Arizona, I-40 east through Gallup, Grants, Albuquerque and Moriarty to Clines Corners, then US 285 south; from Texas on the east, I-40 west through Tucumcari to Santa Rosa, US 54 to Vaughn, then US 285 south; and from Texas on the south, US 285 north through Loving into Carlsbad. All of them finish east on US 62/180 to the WIPP north access road. Radioactive and HRCQ loads must use the designated relief and bypass routes around cities and may not use the posted city truck routes (18.20.9 NMAC, 49 CFR 397).
• Through-truck routes: Cities post local truck routes, but for radioactive and HRCQ shipments the state flips it: use the designated relief and bypass routes around cities, and do not use the posted city truck routes (18.20.9 NMAC). General freight follows posted routes with federal reasonable access to terminals and services.
• Fine: Off-route radioactive or hazmat transport violates state routing rules and 49 CFR 397 and can bring a citation plus liability. Amounts vary by court. Confirm current figures with NMDOT and New Mexico DPS.

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