Topzle Updated: Wikipedia source
U.S. Route 550 (US 550) is a spur of U.S. Highway 50 that runs from Bernalillo, New Mexico to Montrose, Colorado in the western United States. The section from Silverton to Ouray is frequently called the Million Dollar Highway. It is one of the roads on the Trails of the Ancients Byway, one of the designated New Mexico Scenic Byways.
| State | County | Location | mi | km | Destinations | Notes | ||
| New Mexico | Sandoval | Bernalillo | 0.000 | 0.000 | NM 165 east – Placitas | Continuation east beyond southern terminus | ||
| I-25 / US 85 north (CanAm Highway) – Santa Fe, Las Vegas, Raton I-25 / US 85 south (CanAm Highway) – Albuquerque | Southern terminus; I-25 exit 242 | |||||||
| NM 313 north (Camino Del Pueblo) – Santa Ana Pueblo, Algodones, San Felipe Pueblo NM 313 south (Camino Del Pueblo) – Pueblo of Sandia Village, North Valley | ||||||||
| 2.440 | 3.927 | NM 528 south – Rio Rancho | Northern end of NM 528 | |||||
| San Ysidro | 23.225 | 37.377 | NM 4 north – San Ysidro | Southern end of NM 4 | ||||
| | 63.381 | 102.002 | NM 197 south – Torreon | Northern end of NM 197 | ||||
| Cuba | 64.346 | 103.555 | NM 126 east – Santa Fe National Forest | Western end of NM 126 | ||||
| | 68.025 | 109.476 | NM 96 north – La Jara | Southern end of NM 96 | ||||
| | 85.485 | 137.575 | NM 537 north | Southern end of NM 537 | ||||
| Rio Arriba | No major junctions | |||||||
| San Juan | | 123.470 | 198.706 | NM 57 south | Northern end of NM 57 | |||
| Bloomfield | 151.746 | 244.212 | US 64 west – Farmington, Taos | Southern end of US 64 concurrency | ||||
| 152.061 | 244.718 | US 64 east – Navajo City | Northern end of US 64 concurrency | |||||
| Aztec | 159.584 | 256.826 | NM 516 west (Aztec Boulevard) – Farmington | Eastern end of NM 516 | ||||
| 161.470 | 259.861 | NM 173 east – Navajo State Park | Western end of NM 173 | |||||
| 174.8850.000 | 281.4500.000 | New Mexico–Colorado line | ||||||
| Colorado | La Plata | | 16.561 | 26.652 | US 160 east – Pagosa Springs | Southern end of US 160 concurrency | ||
| Durango | 18.369 | 29.562 | SH 3 north | Southern end of SH 3 | ||||
| 20.916 | 33.661 | US 160 west – Cortez | Northern end of US 160 concurrency | |||||
| San Juan | No major junctions | |||||||
| Ouray | Ridgway | 103.702 | 166.892 | SH 62 west – Placerville | Eastern end of SH 62 | |||
| Montrose | Montrose | 129.306 | 208.098 | SH 90 west (Main Street) – Naturita | Eastern end of SH 90 | |||
| 130.219 | 209.567 | US 50 east (North San Juan Avenue) – Sapinero, GunnisonNorth Grand Avenue west | Northern terminus | |||||
| US 50 west (North Townsend Avenue) – Olathe, Delta, Grand Junction | Continuation north beyond northern terminus | |||||||
| mi Concurrency terminus | ||||||||