page_title: U.S. Route 550
section_title: Colorado
hierarchical_section_title: U.S. Route 550 / Route description / Colorado
caption_attribution_description: Avalanche chute "overpass", U.S. 550 Between Ouray and Silverton, Colorado (12)
context_page_description: U.S. Route 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.
context_section_description: Most of U.S. 550 in Colorado is two-lane mountainous highway.  It is one of only two  north–south U.S. Highways in Colorado which runs west of the Continental Divide. (The other route is US 491.) The route travels north through the San Juan Mountains.
  The Million Dollar Highway stretches for about 25 miles (40 km) in western Colorado and follows the route of U.S. 550 between Silverton and Ouray, Colorado. It is part of the San Juan Skyway Scenic Byway. Between Durango and Silverton the Skyway loosely parallels the Durango and Silverton Narrow Gauge Railroad.
  Though the entire stretch has been called the Million Dollar Highway, it is really the twelve miles (19 km) south of Ouray through the Uncompahgre Gorge to the summit of Red Mountain Pass which gains the highway its name.  This stretch through the gorge is challenging and potentially hazardous to drive; it is characterized by steep cliffs, narrow lanes, and a lack of guardrails; the ascent of Red Mountain Pass is marked with a number of hairpin curves used to gain elevation, and again, narrow lanes for traffic—many cut directly into the sides of mountains.  During this ascent, the remains of the Idarado Mine are visible. Travel north from Silverton to Ouray allows drivers to hug the inside of curves; travel south from Ouray to Silverton perches drivers on the vertiginous outside edge of the highway. Large RVs travel in both directions, which adds a degree of excitement (or danger) to people in cars.  The road is kept open year-round.  Summer temperatures can range from highs between 70–90 °F (21–32 °C) at the ends of the highway to 50–70 °F (10–21 °C) in the mountain passes.  The snow season starts in October, and snow will often close the road in winter.  Chains may be required to drive.
  North of Durango, the highway passes by Trimble Springs, hot springs that have been open for visitors since the late 19th century.  The highway runs north along the Animas River, under the Hermosa Cliffs.  It enters the San Juan National Forest and goes past Haviland Lake and Electra Lake.  Drivers pass by Engineer Mountain and Twilight Peak before crossing Coal Bank Pass.  Next is Molas Pass, which offers a panoramic view of Molas Lake, the Animas River Gorge, and Snowdon Peak.  Northbound travelers then pass through the town of Silverton, elevation 9,320 feet (2841 m), surrounded by 13,000 foot (4000 m) peaks Sultan Mountain, Kendall Mountain, and Storm Peak.
  The highway leaves Silverton and proceeds up Mineral Creek Valley before ascending to Red Mountain Pass.  The ruins of the Longfellow Mine are visible along the way. The highway then goes through a series of steep grades and hairpin turns before reaching Lookout Point, which offers a view of the town of Ouray.
  This section of the route passes over three mountain passes:
  Coal Bank Pass, elevation 10,640 ft (3,240 m).
  Molas Pass, elevation 10,970 ft (3,340 m).
  Red Mountain Pass, elevation 11,018 ft (3,358 m).
  The origin of the name Million Dollar Highway is disputed.  There are several legends, though, including that it cost a million dollars a mile to build in the 1920s, and that its fill dirt contains a million dollars in gold ore.
  There are seventy named avalanche paths that intersect Highway 550 in the 23 mi (37 km) between Ouray and Silverton, Colorado.
  U.S. 550 ends at the corner of Townsend Avenue and San Juan Avenue in Montrose, Colorado at the junction of its parent route U.S. Highway 50.
caption: An "overpass" for an active avalanche chute on the Million Dollar Highway, south of Ouray.
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