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Tennessee Pass (Colorado)

From Wikipedia, the free encyclopedia

Tennessee Pass
Summit of Tennessee Pass along U.S. Highway 24, showing the memorial to the 10th Mountain Division
Elevation10,424 ft (3,177 m)[1]
Traversed by US 24
Denver and Rio Grande Western Railroad
LocationEagle / Lake counties, Colorado, U.S.
RangeSawatch Range
Coordinates39°21′45″N 106°18′40″W / 39.36250°N 106.31111°W / 39.36250; -106.31111[1]
Topo mapUSGS Leadville North
Tennessee Pass is located in Colorado
Tennessee Pass
Tennessee Pass
Location in Colorado

Tennessee Pass elevation 10,424 ft (3,177 m) is a high mountain pass in the Rocky Mountains of central Colorado in the United States. The pass was named after Tennessee, the native state of a group of early prospectors.[2]

YouTube Encyclopedic

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  • Tennessee Pass & the Royal Gorge Route
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  • EXPLORING THE TENNESSEE PASS |COLORADO|

Transcription

Route

The pass traverses the Continental Divide north of Leadville in a gap between the northern end of the Sawatch Range to the west and the northern end of the Mosquito Range to the east. It connects the headwaters of the Arkansas River to the south with the upper valley of the Eagle River (in the watershed of the Colorado River) to the north. The pass is traversed by U.S. Highway 24, allowing access between Leadville and Interstate 70 in the Eagle Valley. The pass has a gentle approach on both sides with few steep gradients and no major hairpin curves. The summit of the pass is nearly level. The road over the pass is generally open all year round, easily negotiable by most vehicles, and closes only during severe winter storms.

The summit of the pass is the location of Ski Cooper, a ski area in the San Isabel National Forest operated by permit from the United States Forest Service. Most of the area is above the tree line, providing a panoramic view of the peaks of the Sawatch Range to visitors. The area was formerly a World War II training ground for United States Army troops of the 10th Mountain Division from nearby Camp Hale. A memorial to troops of the division is located at the summit of the pass.

Railroad line

Terraces of the Upper Arkansas River. Labeled features are: b - Tennessee Pass, c - camp, d - California Gulch, and e - Iowa Gulch
Denver & Rio Grande Western Railroad train at Tennessee Pass, c. 1910s or 1920s.
The tunnel's south portal in 2020

The Denver & Rio Grande Western Railroad constructed a narrow gauge railroad over Tennessee Pass in 1881, first as a branch line to access mines near Red Cliff, but by the mid 1880s the line became part of its extension to the Aspen area constructed in order to beat the Colorado Midland's standard gauge route to the rich mining area. In 1890, a new standard gauge line was built from Pueblo, to Grand Junction, and jointly with the Colorado Midland Railway, a tunnel was constructed about 200 ft (61 m) below the summit. In 1945, the old Tennessee Pass Tunnel was replaced by a newer tunnel. In recent times,[when?] the Rio Grande's Tennessee Pass line was the highest active mainline railroad mountain pass in the United States. The line, now owned by the Union Pacific (UP), is currently out of use but the tracks remain in place.[3]

Once the Moffat Tunnel and Dotsero Cutoff were constructed, the line through Tennessee Pass became a secondary route. The Moffat Tunnel route had a maximum grade of 2%. The west side of the Tennessee Pass route has grades up to 3%. However, the east side of the Tennessee Pass has a maximum grade of only 1.4%.

Southern Pacific’s (SP) acquisition by The Denver & Rio Grande in 1988 made Tennessee Pass once again the preferred transcontinental route. SP had a central route from California through to Kansas via Donner Pass, Tennessee Pass and trackage rights on the former Missouri Pacific route from Pueblo, Colorado into Kansas. The Moffat Tunnel route was kept in use.

In 1996, UP bought Southern Pacific. UP preferred the Moffat Tunnel for routing traffic.[4] The last revenue train went over the Tennessee Pass on August 23, 1997. Soon after UP ran this last train, they applied to the Surface Transportation Board for permission to abandon the line.

Currently, the line is not of much use as the former Missouri Pacific line to Pueblo has been partially abandoned so trains would have to travel from Denver south to Pueblo before heading west.

The 12 mi (19 km) of the Tennessee Pass line through the Royal Gorge is currently operated by the Royal Gorge Route Railroad, who operates excursion trains out of Cañon City.

On July 10, 2012, part of the old tunnel collapsed, creating a sinkhole that damaged U.S. Highway 24 and forced its temporary closure between Redcliff and Leadville. The newer tunnel was not damaged.[5][6]

A report released by the Colorado Department of Transportation on September 4, 2014 stated the following about the line:

...The Tennessee Pass line has been identified as significant to CDOT because of its potential to carry both passengers and freight, and because it is the only existing trans-mountain alternative in Colorado to the Moffat Tunnel line, which often runs near capacity. The Tennessee Pass Line may be able to be used as an alternate route as trans-mountain rail demand grows due to increased development on the Western Slope or if the Moffat Tunnel were damaged or closed for any reason. Such an event would have a significant impact on Colorado, particularly on the Western Slope, since the railroads would be forced to move freight through Wyoming. The Royal Gorge Route Railroad currently offers scenic, tourist rail trips on 12 miles of the Tennessee Pass Line west of Cañon City. No freight has been shipped on the Tennessee Pass Line since 1997.

Union Pacific began actively discussing the sale of the line to Colorado Pacific in 2019, for an amount of $10 million. Colorado Pacific wanted to pay only the $8.8 million that the line was valued at. After a long battle in court, the ICC declared that they would not force a sale, but if other evidence was found, Colorado Pacific could re-file the report. As of October 2020, Colorado Pacific attempted another forced sale, this time saying they’ll run passenger/excursion service over the route. Union Pacific responded by stating they were in active negotiations for Rio Grande Pacific to operate the line and were opposed to Colorado Pacific's bid. [7] On December 31, 2020 Rio Grande Pacific subsidiary Colorado, Midland & Pacific Railway Company, announced it had entered in an agreement with Union Pacific to explore reopening, leasing and operating the line for both potential commuter and freight services. [8]

Water diversion

The ditch at the pass in October 2020, after it was shut down for the winter

Tennessee Pass is the location of the first transbasin diversion project to move water from the Colorado River Basin over the continental divide to the Arkansas River. The 1.5-mile (2.4 km) Ewing Placer Ditch (or just Ewing Ditch) was constructed in 1880 and remains in use. It transfers water from Piney Creek east of the pass, a tributary of the Eagle River over the pass to the head of Tennessee Creek. The ditch may have originally been used to provide water for placer mining, but the Otero Canal Company used the water for irrigation before selling the ditch to the Pueblo Board of Water Works in 1955. The ditch has a capacity of 18.5 cubic feet per second (0.52 m3/s) and in an average year diverts approximately 1,000 acre-feet (1.2×10^6 m3).

A second ditch was constructed at Tennessee pass in 1929, the 6-mile (9.7 km) Wurts Ditch. This was built by William Wurts to provide irrigation water, but Pueblo purchased this ditch in 1938, and in 1953, they extended the ditch another 6.5 miles (10.5 km) westward along the south flank of the Eagle River valley. After extension, the ditch has a capacity of 100 cubic feet per second (2.8 m3/s) and diverts an average of about 2,700 acre-feet (3.3×10^6 m3) of water.[9]

See also

References

  1. ^ a b "Tennessee Pass". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved February 5, 2011.
  2. ^ Dawson, John Frank. Place names in Colorado: why 700 communities were so named, 150 of Spanish or Indian origin. Denver, CO: The J. Frank Dawson Publishing Co. p. 48.
  3. ^ Williams, David O. (May 5, 2023). "Billionaire Colorado landowner no longer pursuing Tennessee Pass rail line". Colorado Newsline. Retrieved May 6, 2023.
  4. ^ "The most spectacular trains in the world". Rail. No. 319. December 3, 1997. pp. 22–24.
  5. ^ "Old railroad tunnel collapses along Highway 24". 9News. July 10, 2012. Retrieved July 20, 2012.
  6. ^ "100-Year-Old Railroad Tunnel Collapsed Below Sinkhole". July 11, 2012.
  7. ^ "Colorado Pacific says it would offer passenger service as part of new bid for Tennessee Pass line". Trains.
  8. ^ "UPDATE: Rio Grande Pacific to Lease Tennessee Pass Route". Railfan & Railroad. December 31, 2020.
  9. ^ John N. Winchester, A Historical View:  Transmountain Development in Colorado Archived 2016-03-04 at the Wayback Machine, 2000; retrieved July, 2015.
This page was last edited on 19 March 2024, at 01:54
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