Cottonwood Pass

Cottonwood Pass (elevation 12,119 feet (3,694 m)) is a high mountain pass in south-central Colorado in the Rocky Mountains of the western United States. It is located along the border of Gunnison and Chaffee counties in Colorado and is in the Sawatch Range. The area surrounding the pass is mostly forest, with the San Isabel National Forest to the east and the Gunnison National Forest to the west.

Cottonwood Pass
Sign marking the Continental Divide atop Cottonwood Pass.
Elevation12,119 ft (3,694 m)[1]
Traversed byChaffee County Road 306
Gunnison County Road 209
LocationChaffee–Gunnison counties, Colorado, U.S.
RangeSaguache Range
Coordinates38°49′40.31″N 106°24′33.37″W
Topo mapTincup
View from near Cottonwood Pass, facing northwest.

The Continental Divide is marked at the saddle point of Cottonwood Pass. It is also the highest pass with an improved road in the state, the third-highest paved road in the state, and the highest paved crossing of the Continental Divide in the U.S.

The pass is closed seasonally due to heavy snowfall, typically from around October until sometime in May. When open, the pass can be accessed from Buena Vista to the east by following Chaffee County Road 306. Near the summit, the road name changes to Gunnison County Road 209 as it continues to the west, passing near Taylor Park Reservoir and continuing down into the town of Almont. The road is fully paved on both sides. When open, the pass is one of the few routes through the Sawatch Range accessible in a standard two-wheel drive passenger vehicle. Independence Pass is another such seasonal route through this mountain range, while efforts are made to ensure that U.S. 50 at Monarch Pass remains open year-round for all vehicles, barring extreme weather conditions.

Mudslides

In July 2002, heavy rains from a thunderstorm east of Cottonwood Pass caused a significant mudslide that blocked portions of Chaffee County Road 306 for many days. The National Weather Service estimated that between three and four inches of rain fell within one hour on the evening of 22 July 2002,[2] causing a portion known as Red Deer Mountain to begin sliding downward and leaving debris up to 15 feet deep on the road. Several people were rescued from their vehicles after becoming trapped by the mud, but no fatalities were reported. Other mudslides caused by slow-moving thunderstorms have occurred near this area in both 2004 and 2007.[3][4]

2017-2019 project to pave and improve the pass road

A project to widen, realign, and pave the pass began in the spring of 2017[5] and was completed in September 2019. The three-year-long project made the pass the country's second-highest paved pass.[6]

References
  1. "Cottonwood Pass". Geographic Names Information System. United States Geological Survey.
  2. "Chaffee County Rock and Mudslides - July 22,2002" National Weather Service Forecast Office website, Pueblo, CO. Retrieved 19 November 2009.
  3. "Denver Breaks Rainfall Record" TheDenverChannel.com, 19 August 2004. Retrieved 19 November 2009.
  4. "Alpine residents clean up after July 21 mudslide" Archived 2011-07-08 at the Wayback Machine Article by Paul Goetz, Chaffee County Times, 25 July 2007. Retrieved 19 November 2009.
  5. Nettles, Katherine (2019-09-04). "Cottonwood Pass scheduled to fully open this weekend". Crested Butte News. Retrieved 2019-11-05.
  6. Wondra, Jan (2019-09-20). "Cottonwood Pass opens after long wait, described as 'one amazingly beautiful road'". Ark Valley Voice. Retrieved 2019-11-05.
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