Utah State Route 73
Encyclopedia
State Route 73 is a state highway
in the U.S. state
of Utah
, connecting the Rush and Utah Valley
s.
, and then curving between the south end of the range and the Deseret Chemical Depot
. When the highway reaches Fivemile Pass, a wind gap between the Oquirrh Mountains and Thorpe Hills, it curves northeast, joining the historic Central Overland Trail (Pony Express
route) through the pass and descending into the Cedar Valley. At Fairfield, SR-73 curves north, while the old trail continues its northeasterly path as Lehi-Fairfield Road. The route again curves northeast at Cedar Fort, crossing the valley and passing between the Lake Mountains and Traverse Mountains. The final segment is within the Utah Valley
, as SR-73 heads east across the Jordan River
and into Lehi, where it serves as that city's Main Street before ending at US-89.
. Two years later, the portion west of Fairfield was dropped, in favor of a routing south from Fairfield to SR-26 (now US-6) near Eureka. State Route 180 was also created in 1935, beginning at SR-36 south of Stockton and heading east through Ophir Canyon to Ophir
and southeast through the Oquirrh Mountains
to Mercur
. State Route 202 was defined in 1939 as an eastern approach to Mercur, splitting off SR-73 north of Fairfield and climbing Manning Canyon, and in 1941 the portion of SR-180 between Ophir and Mercur was removed from the state highway system, with an extension of SR-202 west down Mercur Canyon to SR-180 replacing it.
SR-73 was realigned again in 1945, turning southwest between Cedar Fort and Fairfield, absorbing the beginning of SR-202, and continuing southwest to a point between Fairfield and Fivemile Pass. The remainder of the route followed its present alignment to SR-36, replacing the portions of SR-202 and SR-180 that lay outside the canyons in the Rush Valley. The part of former SR-73 from Fairfield north to the junction south of Cedar Fort became State Route 191, while the part south of Fairfield was given to the county. SR-202 was cut back to only the portion in Mercur Canyon, with the Manning Canyon piece dropped. Finally, a connection from the Deseret Chemical Depot
north to SR-73 near its west end, constructed with federal aid in 1942, was numbered State Route 198. In short, SR-73 now connected SR-36 to SR-68, with four spurs from west to east: SR-198 to the chemical depot, SR-180 to Ophir, SR-202 to Mercur, and SR-191 to Fairfield.
Over the next two decades, all four spurs disappeared. The first two to go were SR-191 and SR-202, both eliminated in 1953. This completely removed Mercur from the state highway system, but Fairfield was kept by moving SR-73 to its current alignment through that community. SR-180 was eliminated in 1961, and SR-198 was deleted in 1969. Due to a southerly extension of SR-68 in 1960, splitting at the SR-73 intersection, the portion of SR-68 into Lehi was renumbered as an extension of SR-73, which gained its current length at that time.
State highway
State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...
in the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
of Utah
Utah
Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...
, connecting the Rush and Utah Valley
Utah Valley
Utah Valley is a valley in North Central Utah located in Utah County, and is considered part of the Wasatch Front. It contains Provo, Orem, and their suburbs, including Highland, Eagle Mountain, Saratoga Springs, Mapleton, Spanish Fork, Lindon, Pleasant Grove, Springville, Lehi, Payson, and...
s.
Route description
SR-73 begins at an intersection with SR-36 in the Rush Valley, northeast of the town of the same name. It heads southeasterly, climbing slightly to the edge of the Oquirrh MountainsOquirrh Mountains
The Oquirrh Mountains is a mountain range that run north-south for approximately 30 miles to form the west side of Utah's Salt Lake Valley, separating it from Tooele Valley. The range begins in northwest Utah County and stops at the south shore of the Great Salt Lake. The highest elevation is...
, and then curving between the south end of the range and the Deseret Chemical Depot
Deseret Chemical Depot
The Deseret Chemical Depot is a U.S. Army chemical weapon storage area located in Utah, 60 miles southwest of Salt Lake City. It is related to the Tooele Chemical Agent Disposal Facility.-History:...
. When the highway reaches Fivemile Pass, a wind gap between the Oquirrh Mountains and Thorpe Hills, it curves northeast, joining the historic Central Overland Trail (Pony Express
Pony Express
The Pony Express was a fast mail service crossing the Great Plains, the Rocky Mountains, and the High Sierra from St. Joseph, Missouri, to Sacramento, California, from April 3, 1860 to October 1861...
route) through the pass and descending into the Cedar Valley. At Fairfield, SR-73 curves north, while the old trail continues its northeasterly path as Lehi-Fairfield Road. The route again curves northeast at Cedar Fort, crossing the valley and passing between the Lake Mountains and Traverse Mountains. The final segment is within the Utah Valley
Utah Valley
Utah Valley is a valley in North Central Utah located in Utah County, and is considered part of the Wasatch Front. It contains Provo, Orem, and their suburbs, including Highland, Eagle Mountain, Saratoga Springs, Mapleton, Spanish Fork, Lindon, Pleasant Grove, Springville, Lehi, Payson, and...
, as SR-73 heads east across the Jordan River
Jordan River (Utah)
The Jordan River in the U.S. state of Utah is a river about long. Regulated by pumps at its headwaters at Utah Lake, it flows northward through the Salt Lake Valley and empties into the Great Salt Lake. Four of Utah's five largest cities—Salt Lake City, West Valley City, West Jordan and...
and into Lehi, where it serves as that city's Main Street before ending at US-89.
History
The state legislature defined State Route 73 in 1933, running from SR-68 (created in 1931) west of Lehi southwest via Cedar Fort, Fairfield and Topliff to SR-36. Up until Fivemile Pass, beyond Fairfield, this followed the present route of SR-73, but at Fivemile Pass the route curved southwesterly, generally following the former Fairfield Branch of the Union Pacific RailroadUnion Pacific Railroad
The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....
. Two years later, the portion west of Fairfield was dropped, in favor of a routing south from Fairfield to SR-26 (now US-6) near Eureka. State Route 180 was also created in 1935, beginning at SR-36 south of Stockton and heading east through Ophir Canyon to Ophir
Ophir, Utah
Ophir is a town in Tooele County, Utah, United States. It is part of the Salt Lake City, Utah Metropolitan Statistical Area. The population was 23 at the 2000 census, a decrease of two from the 1990 figure of 25.-History:...
and southeast through the Oquirrh Mountains
Oquirrh Mountains
The Oquirrh Mountains is a mountain range that run north-south for approximately 30 miles to form the west side of Utah's Salt Lake Valley, separating it from Tooele Valley. The range begins in northwest Utah County and stops at the south shore of the Great Salt Lake. The highest elevation is...
to Mercur
Mercur, Utah
Mercur is a historical hard rock mining ghost town located at in Tooele County, Utah, USA. Its elevation from sea level is approximately 2,042m...
. State Route 202 was defined in 1939 as an eastern approach to Mercur, splitting off SR-73 north of Fairfield and climbing Manning Canyon, and in 1941 the portion of SR-180 between Ophir and Mercur was removed from the state highway system, with an extension of SR-202 west down Mercur Canyon to SR-180 replacing it.
SR-73 was realigned again in 1945, turning southwest between Cedar Fort and Fairfield, absorbing the beginning of SR-202, and continuing southwest to a point between Fairfield and Fivemile Pass. The remainder of the route followed its present alignment to SR-36, replacing the portions of SR-202 and SR-180 that lay outside the canyons in the Rush Valley. The part of former SR-73 from Fairfield north to the junction south of Cedar Fort became State Route 191, while the part south of Fairfield was given to the county. SR-202 was cut back to only the portion in Mercur Canyon, with the Manning Canyon piece dropped. Finally, a connection from the Deseret Chemical Depot
Deseret Chemical Depot
The Deseret Chemical Depot is a U.S. Army chemical weapon storage area located in Utah, 60 miles southwest of Salt Lake City. It is related to the Tooele Chemical Agent Disposal Facility.-History:...
north to SR-73 near its west end, constructed with federal aid in 1942, was numbered State Route 198. In short, SR-73 now connected SR-36 to SR-68, with four spurs from west to east: SR-198 to the chemical depot, SR-180 to Ophir, SR-202 to Mercur, and SR-191 to Fairfield.
Over the next two decades, all four spurs disappeared. The first two to go were SR-191 and SR-202, both eliminated in 1953. This completely removed Mercur from the state highway system, but Fairfield was kept by moving SR-73 to its current alignment through that community. SR-180 was eliminated in 1961, and SR-198 was deleted in 1969. Due to a southerly extension of SR-68 in 1960, splitting at the SR-73 intersection, the portion of SR-68 into Lehi was renumbered as an extension of SR-73, which gained its current length at that time.
Major intersections
| County | Location | Mile | Destinations | Notes |
|---|---|---|---|---|
| Tooele | 0.000 | |||
| 3.422 | Stark Road | Former SR-198 | ||
| 4.607 | Ophir Canyon Road | Former SR-180 | ||
| 15.647 | Railroad Bed Road | Former SR-73 | ||
| Utah | Fairfield | 20.497 | 18150 West | Former SR-73 |
| Saratoga Springs | 36.429 | |||
| Lehi | 39.573 | |||
| 40.819 | , Las Vegas | Interchange | ||
| 41.177 |