Utah State Route 138

State Route 138 is a highway,[2] completely within Tooele County in northern Utah that connects Grantsville to Erda and Stansbury Park. The route runs twenty miles (32 km) and is the old routing of U.S. Route 50 Alternate and U.S. Route 40.[3]

For the former highway, see Utah State Route 138 (1933-1953).

State Route 138
Route information
Defined by Utah Code §72-4-119
Maintained by UDOT
Length20.444 mi[1] (32.901 km)
Existed1965–present
Major junctions
West end I-80 near Grantsville (exit 84)
  SR-112 in Grantsville
East end SR-36 at Mills Junction
Highway system
  • State highways in Utah
← SR-137→ SR-139

Route description

From its western terminus at exit 84 of I-80, northeast of the Stansbury Mountains, the route heads southwest (toward the mountain range), reaching the mining operation of Flux, then turns southeasterly. Upon entering the western side of Grantsville, the highway heads east (serving as Grantsville's Main Street) and turns to the northeast after leaving the city. It runs northeasterly until terminating at Mills Junction north of Stansbury Park, at milepost 62.9 of Highway 36.

With the exception of the segment between SR-112 and Sheep Lane, the route is included in the National Highway System.[4]

History

Previous route

When it was first formed in 1933, SR-138 took a similar path to the present-day route, going from Grantsville north to Burmester. This designation was deleted in 1953.[3]

Current route

The current route of SR-138 was formed in 1965, when SR-2 was moved to the north to reflect the future alignment of then under-construction I-80. The state legislature wanted to keep the old alignment of looping down to Grantsville in the state highway system, so it was re-designated as SR-138. This designation has remained the same since that action.[3]

In the May 2018 meeting of the Utah Transportation Commission, a motion passed to truncate the east end SR-138 to the future Tooele Midvalley Highway (SR-179). However, this is contingent on the completion of the segment of SR-179 between SR-138 and I-80, which has not begun construction.[5][6]

Major intersections

The entire route is in Tooele County. [7]

Location[7]mi[1]kmDestinationsNotes
​0.000–
0.505		0.000–
0.813		 I-80 – Wendover, Salt Lake CityWestern terminus; I-80 exit 84
Grantsville12.20919.648 SR-112 south (800 East)Western terminus of SR-112
Mills Junction20.44432.901 SR-36Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. "State Route 138 Highway reference". Utah Department of Transportation.
  2. Utah Code, Title 72, Chapter 4, Section 119
  3. "State Route 138 History". Utah Department of Transportation.
  4. "Utah National Highway System". UDOT Data Portal. Retrieved 2019-01-22.
  5. Utah Transportation Commission (May 11, 2018). "May 11, 2018 Utah Transportation Commission Agenda".
  6. Utah Transportation Commission (May 11, 2018). "May 11, 2018 Utah Transportation Commission Minutes". Retrieved February 22, 2019.
  7. "State Highway Map". Utah Department of Transportation. Retrieved 27 April 2008.
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