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Promontory Mountains
A photo of the Promontory Mountains viewed from across Willard Bay
Promontory Mountains from the east shore of Willard Bay north of Ogden
Highest point
Peak Messix Peak[1]
Elevation 7,349 ft (2,240 m)
Coordinates 41°29′25″N 112°30′30″W / 41.490201°N 112.508377°W / 41.490201; -112.508377Coordinates: 41°29′25″N 112°30′30″W / 41.490201°N 112.508377°W / 41.490201; -112.508377
Length 35 mi (56 km) north to south
Country United States
State Utah

The Promontory Mountains are a range in Box Elder County, Utah. The range is oriented north-south and has a length of about 35 miles (56 km). The southern portion forms a cape extending 20 miles (32 km) south into the Great Salt Lake. The First Transcontinental Railroad was completed with the Golden Spike just north of the range at Promontory Summit in the Utah Territory. Today, trains cross the Promontory Point at the southern tip of the range via the Lucin Cutoff railroad causeway across the lake.

The Great Salt Lake is to the west and south of the Promontory Mountains.


The Promontory Mountains are a block fault range typical of the Basin and Range Province. The west side of the range is bounded by the East Great Salt Lake normal fault which passes under the lake along the west side of Antelope Island and on to the south shore of the lake to the west side of the Oquirrh Mountains where it continues on strike as the Oquirrh Fault. The East Antelope Island fault runs from the east side of Antelope Island to the north beneath the lake to the east side of the Promentaries where it continues as the East Promontory Mountains fault zone.[2] These two fault systems parallel the larger Wasatch Fault which runs to the east of Great Salt Lake. The faults are normal faults which dip to the west.[3][4]


The Promontory Mountains of 35 mi (56 km) were bypassed by the First Transcontinental Railroad (north)[5] and the replacement 1904 Lucin Cutoff trestle through Promontory Point (south),[6] which was replaced by a 1959 causeway.[7]


  1. ^ "Messix Peak". Peakbagger.com. Retrieved January 13, 2013. 
  2. ^ Gwynn, J. Wallace (1980). Great Salt Lake: a scientific, historical, and economic overview (Google Books). Retrieved 2010-06-12. The Bear River Bay graben is bounded on the west by the East Promontory Mountains fault zone. ... The Antelope Island horst is bounded on the east by the East Antelope Island fault zone. 
  3. ^ W. Adolph Yonkee, et. al., ROAD AND TRAIL LOGS OF ANTELOPE ISLAND STATE PARK, DAVIS COUNTY, UTAH, Fig. 2 in Geologic Road, Trail, and Lake Guides to Utah's Parks and Monuments 2000 Utah Geological Association Publication 29
  4. ^ William R. Lund, The Oquirrh fault zone, Tooele County, Utah, in Paleoseismology of Utah, V. 6, 1996, Utah Geological Survey, Special Study 88
  5. ^ a b NPS Historical Handbook for Golden Spike National Historic Site
  6. ^ Lucin Cutoff Railroad Trestle
  7. ^ Lucin Cutoff Railroad Trestle, After the Trestle

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Promontory_Mountains — Please support Wikipedia.
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5 news items

Salt Lake City Weekly

Salt Lake City Weekly
Fri, 21 Nov 2014 14:36:41 -0800

Promontory Mountains. Promontory Mountains, Utah 84307. Directions. Get directions to this location on Google Maps. Get directions to this location on Google Maps. Saved. Save. Save this place onto your Google map. Save this place onto your Google map ...
National Parks Traveler
Sun, 27 Jan 2013 01:06:38 -0800

When I arrived at the historic site on a Friday afternoon, a southeast wind was carrying moist air from Great Salt Lake up over the Promontory Mountains. It was condensing into a long cloud of freezing ground fog that was dusting the landscape with big ...
Salt Lake Tribune
Wed, 13 May 2009 09:18:37 -0700

Rozel Point, Box Elder County » The landscape west of the Promontory Mountains on the Great Salt Lake's northeast shore resembles Christmas in the spring. Cheat grass and sagebrush provide the green while an algae bloom on the lake serves up the red.
Mon, 03 Aug 2009 12:18:45 -0700

There's one direct route from GSL's operations to the evaporation ponds on the lake's west side: along the Union Pacific's 50-year-old railroad causeway that extends across the lake, just touching the point of the Promontory Mountains. It's a road few ...
Deseret News
Sat, 20 Jan 2007 23:40:49 -0800

Up against the Promontory Mountains, just a few miles from the "last spike" site, you can see places where dirt was pushed up and packed down to create a level surface for the tracks to be laid. "It's hard to see," said Bret Guisto, archaeologist for ...

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