U.S. Route 91
Encyclopedia
U.S. Route 91 is a north–south United States highway. The highway currently serves as a connection between the Cache Valley
area of Utah and Idaho to the Salt Lake
and Idaho Falls
population centers. Prior the mid-1970s, U.S. 91 was an international commerce route from Long Beach, California
to the Canadian border north of Sweetgrass, Montana
. The highway served as the main street of most of the communities it served, including Las Vegas Boulevard
in Las Vegas
and State Street in Salt Lake City. The route has been largely replaced by Interstate 15
. A portion of the highway's former route in California is currently State Route 91
.
using Box Elder and Wellsville Canyons for its path to the Cache Valley
. Along the way it passes Mantua
and Lake Mantua and passes over Sardine Summit. Once entering Cache Valley it serves as the major thoroughfare of the valley. Logan
is the largest city in the valley. Both the Utah and Idaho portions of Cache Valley are part of the Logan Utah Metropolitan Statistical Area.
The Utah section of US-91 is defined at Utah Code Annotated § 72-4-115(1).
as the largest city. The highway passes by the Bear River Massacre Site
, a National Historic Landmark
, near Preston
, and over the geologically significant Red Rock Pass
, near Downey
. The U.S. 91 corridor in Idaho's Cache Valley was the primary filming location for the 2004
movie Napoleon Dynamite
.
After leaving Cache Valley, the highway then crosses back to rejoin Interstate 15. At Pocatello
, U.S. 91, U.S. 30, and I-15 Business Loop separate from Interstate 15 and run concurrently, passing through a small portion of the Idaho State University
campus. U.S. 30 separates from U.S. 91 near Pocatello's city hall at what was once the starting point of one of Idaho's first designated highways, the Yellowstone Park Highway. From this point the highway generally follows the original route of the Yellowstone Park Highway northeastward, until it reaches its terminus at its intersection with U.S. 26, south of Idaho Falls
.
at Long Beach, California
to Coutts, Alberta
. North of Riverside, California
, U.S. 91 mostly paralleled modern I-15. There are some parts where U.S. 91/I-15 had divergent paths. The more southerly is from Littlefield, Arizona
to Saint George, Utah where the two routes took different paths through the Arizona Strip
. The more northerly and longer is the surviving portion of U.S. 91 from Brigham City to Downey, where Interstate 15 follows an old route of U.S. Route 191
.
Utah first submitted a petition to AASHTO to have the U.S. 91 designation truncated in 1971. This petition was approved on June 21, 1971. However, the state did not take action until 1974. Utah officials co-ordinated a second petition with the transportation departments of California, Nevada and Arizona. In this unified petition officials in Utah proposed the number changeover take place in 1974. Nevada requested postponing the deletion of U.S. 91 as Nevada expected to complete the last piece of I-15
in 1975. Nevada officials suggested U.S. Route 40
be similarly truncated, as this highway largely duplicated Interstate 80
in the same states. Despite Nevada's request, the petition was submitted and approved in 1974.
Retracing the path of historic U.S. Route 91 is possible but difficult. In most cities the route of U.S. 91 is still in use as a local street or highway. In many rural areas, I-15 was literally built on top of the former U.S. 91.
The highway passed through the following states:
) in Long Beach
. This intersection also marked the historic western terminus of US 6, which proceeded west from that intersection. East of the intersection, U.S. 91 proceeded east along East Pacific Coast Highway to Los Alamitos Circle
.
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The portions in California were replaced with:
In Las Vegas, U.S. 91 was better known as Las Vegas Boulevard (State Route 604
). The intersection of Las Vegas Boulevard and Fremont Street is the historic intersection with U.S. 93 and U.S. 95. Here, U.S. 466 left U.S. 91 and headed south on Fremont Street with U.S. 93 and 95. At this intersection, U.S. 93 and 95 left Fremont Street and turned north onto Las Vegas Boulevard, heading north with U.S. 91. One block further up, at Bonanza Road, U.S. 95 turned west until it hit Rancho Drive, then continued north. U.S. 91/93 stayed aligned with Las Vegas Boulevard.
Leaving Las Vegas, U.S. 91 followed I-15 to exit 112 (NV 170
) to Mesquite
(NV 144) and then to Hillside Drive into Arizona
, where the road became Fairview Avenue.
. Once Fairview Avenue crosses I-15, it became Cane Beds Road through downtown Beaver Dam
and into Utah
, where the road continued as Old Highway 91.
and what is now SR-18
to St. George.
From St. George
to Springville
US-91 is in the shadows of I-15. At places the old pavement is visible off to the side of the freeway; at others I-15 was paved over the old US-91.
US-91 first joined U.S. Route 89 in Springville
at one of the oldest grade-separated interchanges in Utah (this portion is now State Route 51
). From this junction to Logan
the two highways ran mostly concurrent. This portion is mostly intact as US-89.
US-91 did have a unique route between Farmington
and Ogden
and where US-89/91 split and then rejoined on what is now State Route 126
and State Route 26
. These highways form the Main Street through Kaysville
and Layton
; State Street from the Layton-Clearfield
border to Main Street in Clearfield though the city of Sunset
turning into 1900 West at the Sunset-Roy
border, then following 1900 W to a junction with Riverdale Road in Roy, then following Riverdale Road through Riverdale
, and then meeting back up with US-89 at Washington Blvd in Ogden.
where the highway entered Montana
. In some small towns streets used by the route are called "Old Highway 91".
. In Dillon
the former route of the highway is now known as Atlantic Street and Montana Street. North of Dillon I-15 was built on a new alignment. The highway formerly joined with U.S. Route 10
in Butte
and formed the main street of Boulder
. The highway was routed through Helena
along what is now Montana Secondary Highway 518 and Montana Secondary Highway 229.
|rowspan=15|Utah
|rowspan=5|Box Elder
|rowspan=3|Brigham City
|0.000
|
|
|-
|1.965
|
|South end of US 89 overlap
|-
|3.920
|
|Grade separated interchange, westbound exit, eastbound entrance
|-
|rowspan=2|Mantua
|5.601
|Mantua Road
|Grade separated interchange, eastbound exit, westbound entrance
|-
|6.638
|500 North
|
|-
|rowspan=10|Cache
|rowspan=2|Wellsville
|16.939
|
|
|-
|19.177
|
|
|-
|
|23.769
|
|
|-
|rowspan=3|Logan
|26.651
|
|
|-
|26.886
|
|
|-
|27.148
|
|North end of US 89 overlap
|-
|North Logan
|29.819
|
|
|-
|Smithfield
|34.021
|
|
|-
|Richmond
|40.004
|
|
|-
|
|43.694
|
|
|-
|colspan=3|
|45.271
0.000
|colspan=2 align=center|Utah/Idaho state line
|-
|rowspan=13|Idaho
|rowspan=2|Franklin
|rowspan=2|Preston
|8.389
|
|South end of SH-36 overlap
|-
|9.265
|
|North end of SH-36 overlap
|-
|rowspan=7|Bannock
|Downey
|37.070
|
|
|-
|
|42.462
35.900
|
|
|-
|colspan=4 align=center|US 91 overlaps
with I-15 (exits 36–67)
|-
|rowspan=3|Pocatello
|66.806
0.000
|
|North end of I-15 overlap; South end of I-15 Bus. overlap
|-
|3.442
|
|North end of US 30 overlap
|-
|4.459
77.890
|
|North end of I-15 Bus. overlap
|-
|Chubbuck
|80.020
|
|
|-
|rowspan=2|Bingham
|
|97.024
0.000
|
|South end of I-15 Bus. overlap
|-
|Blackfoot
|3.659
100.700
|
|North end of I-15 Bus. overlap
|-
|rowspan=2|Bonneville
|
|122.866
2.323
|York Road/Old I-15 Bus.
|
|-
|Idaho Falls
|4.526
|
|
Notes:
Cache Valley
The Cache Valley is an agricultural valley of northern Utah and southeast Idaho that includes the Logan metropolitan area. The valley was used by 19th century mountain men and was the site of the 1863 Bear River Massacre.-History:...
area of Utah and Idaho to the Salt Lake
Salt Lake City, Utah
Salt Lake City is the capital and the most populous city of the U.S. state of Utah. The name of the city is often shortened to Salt Lake or SLC. With a population of 186,440 as of the 2010 Census, the city lies in the Salt Lake City metropolitan area, which has a total population of 1,124,197...
and Idaho Falls
Idaho Falls, Idaho
Idaho Falls is a city in and the county seat of Bonneville County, Idaho, United States, and the largest city in Eastern Idaho. As of the 2010 census, the population of Idaho Falls was 56,813, with a metro population of 130,374....
population centers. Prior the mid-1970s, U.S. 91 was an international commerce route from Long Beach, California
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
to the Canadian border north of Sweetgrass, Montana
Sweetgrass, Montana
Sweet Grass is an unincorporated community in Toole County, Montana, United States, on the Canada-US border. It is the northern terminus of Interstate 15, an important route connecting western Canada, the western United States, and Mexico.In 2004, a joint border facility opened at the Sweetgrass...
. The highway served as the main street of most of the communities it served, including Las Vegas Boulevard
Las Vegas Boulevard
State Route 604 is the route number designation for parts of Las Vegas Boulevard, a major north–south road in the Las Vegas metropolitan area of Nevada in the United States best known for the Las Vegas Strip and its casinos. Formerly carrying U.S...
in Las Vegas
Las Vegas, Nevada
Las Vegas is the most populous city in the U.S. state of Nevada and is also the county seat of Clark County, Nevada. Las Vegas is an internationally renowned major resort city for gambling, shopping, and fine dining. The city bills itself as The Entertainment Capital of the World, and is famous...
and State Street in Salt Lake City. The route has been largely replaced by Interstate 15
Interstate 15
Interstate 15 is the fourth-longest north–south Interstate Highway in the United States, traveling through the states of California, Nevada, Arizona, Utah, Idaho, and Montana from San Diego to the Canadian border...
. A portion of the highway's former route in California is currently State Route 91
California State Route 91
State Route 91 is a major east–west freeway located entirely within Southern California and serving several regions of the Greater Los Angeles metropolitan area...
.
Utah
US-91 begins at Brigham City and winds its way through the Wellsville MountainsWellsville Mountains
The Wellsville Mountains are located in northern Utah and are often considered part of the Wasatch Mountains. The mountains separate the Cache Valley from the Wasatch Front. Nearly all of the water collected by the Wellsville Mountains drains into the Bear River.While only moderately tall, they are...
using Box Elder and Wellsville Canyons for its path to the Cache Valley
Cache Valley
The Cache Valley is an agricultural valley of northern Utah and southeast Idaho that includes the Logan metropolitan area. The valley was used by 19th century mountain men and was the site of the 1863 Bear River Massacre.-History:...
. Along the way it passes Mantua
Mantua, Utah
Mantua is a town in eastern Box Elder County, Utah, United States. The population was 687 at the 2010 census. Mantua was settled in the mid-19th Century when future LDS President and then apostle and head church authority in Box Elder County Lorenzo Snow sent settlers to the valley to grow flax....
and Lake Mantua and passes over Sardine Summit. Once entering Cache Valley it serves as the major thoroughfare of the valley. Logan
Logan, Utah
-Layout of the City:Logan's city grid originates from its Main and Center Street block, with Main Street running north and south, and Center east and west. Each block north, east, south, or west of the origin accumulates in additions of 100 , though some streets have non-numeric names...
is the largest city in the valley. Both the Utah and Idaho portions of Cache Valley are part of the Logan Utah Metropolitan Statistical Area.
The Utah section of US-91 is defined at Utah Code Annotated § 72-4-115(1).
Idaho
U.S. 91 continues serving the Idaho portion of the Cache Valley with PrestonPreston, Idaho
Preston is a city in Franklin County, Idaho, United States. The population was 4,682 at the 2000 census. The city is the county seat of Franklin County. It is part of the Logan, Utah-Idaho Metropolitan Statistical Area.-History:...
as the largest city. The highway passes by the Bear River Massacre Site
Bear River Massacre Site
Bear River Massacre Site, near Preston, Idaho, is the site of the Bear River Massacre, in which a village of Shoshone Native Americans were attacked by the California Volunteers on January 29, 1863. Estimates of Shoshone casualties are as high as 384...
, a National Historic Landmark
National Historic Landmark
A National Historic Landmark is a building, site, structure, object, or district, that is officially recognized by the United States government for its historical significance...
, near Preston
Preston, Idaho
Preston is a city in Franklin County, Idaho, United States. The population was 4,682 at the 2000 census. The city is the county seat of Franklin County. It is part of the Logan, Utah-Idaho Metropolitan Statistical Area.-History:...
, and over the geologically significant Red Rock Pass
Red Rock Pass
Red Rock Pass is a low mountain pass in eastern Idaho, south of Downey in southern Bannock County. It is geologically significant as the spillway of ancient Lake Bonneville...
, near Downey
Downey, Idaho
Downey is a city in Bannock County, Idaho, United States. It is part of the 'Pocatello, Idaho Metropolitan Statistical Area'. The population was 613 at the 2000 census.-Geography:...
. The U.S. 91 corridor in Idaho's Cache Valley was the primary filming location for the 2004
2004 in film
The year 2004 in film involved some significant events. Major releases of sequels took place. It included blockbuster films like Shrek 2, Harry Potter and the Prisoner of Azkaban, The Passion of the Christ, Meet the Fockers, Blade: Trinity, Spider-Man 2, Alien vs. Predator, Kill Bill Vol...
movie Napoleon Dynamite
Napoleon Dynamite
Napoleon Dynamite is a 2004 comedy film co-written and directed by Jared Hess and Jerusha Hess and stars Jon Heder as Napoleon Dynamite. The film was Jared Hess' first full-length feature and is partially adapted from his earlier short film, Peluca....
.
After leaving Cache Valley, the highway then crosses back to rejoin Interstate 15. At Pocatello
Pocatello, Idaho
Pocatello is the county seat and largest city of Bannock County, with a small portion on the Fort Hall Indian Reservation in neighboring Power County, in the southeastern part of the U.S. state of Idaho. It is the principal city of the Pocatello metropolitan area, which encompasses all of Bannock...
, U.S. 91, U.S. 30, and I-15 Business Loop separate from Interstate 15 and run concurrently, passing through a small portion of the Idaho State University
Idaho State University
Idaho State University is a public university located in Pocatello, Idaho. It has outreach programs in Coeur d'Alene, Idaho Falls, Boise, and Twin Falls....
campus. U.S. 30 separates from U.S. 91 near Pocatello's city hall at what was once the starting point of one of Idaho's first designated highways, the Yellowstone Park Highway. From this point the highway generally follows the original route of the Yellowstone Park Highway northeastward, until it reaches its terminus at its intersection with U.S. 26, south of Idaho Falls
Idaho Falls, Idaho
Idaho Falls is a city in and the county seat of Bonneville County, Idaho, United States, and the largest city in Eastern Idaho. As of the 2010 census, the population of Idaho Falls was 56,813, with a metro population of 130,374....
.
History
At its peak, from 1947 to 1965, U.S. 91 extended from the Pacific OceanPacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
at Long Beach, California
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
to Coutts, Alberta
Coutts, Alberta
Coutts is a village in Alberta and the location of one of the busiest Canada – US border crossings in western Canada. It connects Highway 4 to Interstate 15, an important trade route between Alberta, American states along I-15, and Mexico.In 2004, a joint border facility opened in Coutts-Sweet...
. North of Riverside, California
Riverside, California
Riverside is a city in Riverside County, California, United States, and the county seat of the eponymous county. Named for its location beside the Santa Ana River, it is the largest city in the Riverside-San Bernardino-Ontario metropolitan area of Southern California, 4th largest inland California...
, U.S. 91 mostly paralleled modern I-15. There are some parts where U.S. 91/I-15 had divergent paths. The more southerly is from Littlefield, Arizona
Littlefield, Arizona
Littlefield is an unincorporated community in Mohave County located in the Arizona Strip region of the U.S. state of Arizona. It is located along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada...
to Saint George, Utah where the two routes took different paths through the Arizona Strip
Arizona Strip
The Arizona Strip is the part of the U.S. state of Arizona lying north of the Colorado River. The difficulty of crossing the Grand Canyon causes this region to have more natural connections with southern Utah and Nevada than with the rest of Arizona....
. The more northerly and longer is the surviving portion of U.S. 91 from Brigham City to Downey, where Interstate 15 follows an old route of U.S. Route 191
U.S. Route 191
U.S. Route 191 is a spur of U.S. Route 91 that has two branches. The southern branch runs for 1,465 miles from Douglas, Arizona on the Mexican border to the southern part of Yellowstone National Park. The northern branch runs for 440 miles from the northern part of Yellowstone National Park to...
.
Utah first submitted a petition to AASHTO to have the U.S. 91 designation truncated in 1971. This petition was approved on June 21, 1971. However, the state did not take action until 1974. Utah officials co-ordinated a second petition with the transportation departments of California, Nevada and Arizona. In this unified petition officials in Utah proposed the number changeover take place in 1974. Nevada requested postponing the deletion of U.S. 91 as Nevada expected to complete the last piece of I-15
Interstate 15 in Nevada
In the U.S. State of Nevada, Interstate 15 begins in Primm, continues through Las Vegas and it crosses the border with Arizona in Mesquite. The freeway runs entirely in Clark County. Many motorists use Interstate 15 to visit Las Vegas, as it is the only primary Interstate Highway in the city. The...
in 1975. Nevada officials suggested U.S. Route 40
U.S. Route 40
U.S. Route 40 is an east–west United States highway. As with most routes whose numbers end in a zero, U.S. 40 once traversed the entire United States. It is one of the original 1920s U.S. Highways, and its first termini were San Francisco, California, and Atlantic City, New Jersey...
be similarly truncated, as this highway largely duplicated Interstate 80
Interstate 80
Interstate 80 is the second-longest Interstate Highway in the United States, following Interstate 90. It is a transcontinental artery running from downtown San Francisco, California to Teaneck, New Jersey in the New York City Metropolitan Area...
in the same states. Despite Nevada's request, the petition was submitted and approved in 1974.
Retracing the path of historic U.S. Route 91 is possible but difficult. In most cities the route of U.S. 91 is still in use as a local street or highway. In many rural areas, I-15 was literally built on top of the former U.S. 91.
The highway passed through the following states:
- CaliforniaCaliforniaCalifornia is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
(until 1974) - NevadaNevadaNevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
(until 1974) - ArizonaArizonaArizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
(10 miles (16 km) in the Arizona StripArizona StripThe Arizona Strip is the part of the U.S. state of Arizona lying north of the Colorado River. The difficulty of crossing the Grand Canyon causes this region to have more natural connections with southern Utah and Nevada than with the rest of Arizona....
, until 1974) - UtahUtahUtah 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...
- IdahoIdahoIdaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....
- MontanaMontanaMontana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
(until 1980)
California
U.S. 91's original southern terminus was at the intersection of Atlantic Avenue (historically SR 15) and East Pacific Coast Highway (SR 1California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...
) in Long Beach
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
. This intersection also marked the historic western terminus of US 6, which proceeded west from that intersection. East of the intersection, U.S. 91 proceeded east along East Pacific Coast Highway to Los Alamitos Circle
Traffic Circle, Long Beach, California
The Los Alamitos Traffic Circle, informally known as the Long Beach Traffic Circle , is a roundabout at the intersection of Lakewood Boulevard , Pacific Coast Highway and Los Coyotes Diagonal in Long Beach,...
.
- State Route 1California State Route 1State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...
(Pacific Coast Highway from Atlantic Avenue to the Traffic Circle) - State Route 19 (Lakewood Boulevard from the Traffic Circle to Lincoln Avenue)
- State Route 214 (route no longer a state highway — Carson Street and Lincoln Avenue)
- State Route 91California State Route 91State Route 91 is a major east–west freeway located entirely within Southern California and serving several regions of the Greater Los Angeles metropolitan area...
- Interstate 215Interstate 215 (California)Interstate 215 is a long north–south Interstate highway in the Inland Empire region of Southern California. It is an auxiliary route of Interstate 15 , running from Murrieta to northern San Bernardino...
- Interstate 15
Nevada
The route of U.S. 91 in Nevada was replaced with I-15.In Las Vegas, U.S. 91 was better known as Las Vegas Boulevard (State Route 604
Nevada State Route 604
Las Vegas Boulevard is a major road in Las Vegas Valley of Nevada, best known for the Las Vegas Strip and its casinos. Formerly carrying US 91, the main highway between Los Angeles and Salt Lake City, it has been bypassed by Interstate 15, and serves mainly local traffic with some sections...
). The intersection of Las Vegas Boulevard and Fremont Street is the historic intersection with U.S. 93 and U.S. 95. Here, U.S. 466 left U.S. 91 and headed south on Fremont Street with U.S. 93 and 95. At this intersection, U.S. 93 and 95 left Fremont Street and turned north onto Las Vegas Boulevard, heading north with U.S. 91. One block further up, at Bonanza Road, U.S. 95 turned west until it hit Rancho Drive, then continued north. U.S. 91/93 stayed aligned with Las Vegas Boulevard.
Leaving Las Vegas, U.S. 91 followed I-15 to exit 112 (NV 170
Nevada State Route 170
State Route 170 is the designation given to Riverside Road from Interstate 15 Exit 112 to former SR 144 in downtown Mesquite. All of Route 170 was, at one time, U.S. Route 91, which used to stretch from Sweetgrass, Montana to Long Beach, California. It is also called Bunkerville Road and Riverside...
) to Mesquite
Mesquite, Nevada
Mesquite is a city in Clark County, Nevada, United States, adjacent to the Arizona state line and northeast of Las Vegas. As of the 2010 United States Census, it had a population of 15,277. The city is located in the Virgin River Valley...
(NV 144) and then to Hillside Drive into Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
, where the road became Fairview Avenue.
Arizona
U.S. 91 entered Arizona from Nevada on Fairview Avenue and followed it northeast to LittlefieldLittlefield, Arizona
Littlefield is an unincorporated community in Mohave County located in the Arizona Strip region of the U.S. state of Arizona. It is located along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada...
. Once Fairview Avenue crosses I-15, it became Cane Beds Road through downtown Beaver Dam
Beaver Dam, Arizona
Beaver Dam is an unincorporated community in Mohave County located in the extreme northwestern corner of the U.S. state of Arizona, in the Arizona Strip region. It is located along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada...
and into 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...
, where the road continued as Old Highway 91.
Utah
From the State Line to Saint George US-91 followed a semi-circular route that is now simply called Old Highway 91. Old Highway 91 continues to Santa ClaraSanta Clara, Utah
Santa Clara is a city in Washington County, Utah, United States. The population was 4,630 at the 2000 census.-Geography:According to the United States Census Bureau, the city has a total area of 4.9 square miles , of which, 4.9 square miles of it is land and 0.04 square miles of it...
and what is now SR-18
Utah State Route 18
State Route 18 is a state highway in southern Utah, running for in Washington and Iron Counties from St. George to Beryl Junction. It forms part of the Legacy Loop Highway from St. George to Parowan. The highway closely follows the route of the Old Spanish Trail through Dixie National Forest.-St...
to St. George.
From St. George
St. George, Utah
St. George is a city located in the southwestern part of the U.S. state of Utah, and the county seat of Washington County, Utah. It is the principal city of and is included in the St. George, Utah, Metropolitan Statistical Area. The city is 119 miles northeast of Las Vegas, Nevada, and 303 miles ...
to Springville
Springville, Utah
Springville is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 20,424 at the 2000 census, while the 2008 estimates placed it at 28,520. Just minutes south of Provo, Springville is a bedroom community for...
US-91 is in the shadows of I-15. At places the old pavement is visible off to the side of the freeway; at others I-15 was paved over the old US-91.
US-91 first joined U.S. Route 89 in Springville
Springville, Utah
Springville is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 20,424 at the 2000 census, while the 2008 estimates placed it at 28,520. Just minutes south of Provo, Springville is a bedroom community for...
at one of the oldest grade-separated interchanges in Utah (this portion is now State Route 51
Utah State Route 51
State Route 51 is a short highway completely within Utah County in northern Utah that connects SR-147 to US-89. The highway runs for three miles and is an old routing of U.S. Route 91.-Route description:...
). From this junction to Logan
Logan, Utah
-Layout of the City:Logan's city grid originates from its Main and Center Street block, with Main Street running north and south, and Center east and west. Each block north, east, south, or west of the origin accumulates in additions of 100 , though some streets have non-numeric names...
the two highways ran mostly concurrent. This portion is mostly intact as US-89.
US-91 did have a unique route between Farmington
Farmington, Utah
Farmington is a city in Davis County, Utah, United States. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area. The population was 18,255 at the 2010 census. It is the county seat of Davis County...
and Ogden
Ogden, Utah
Ogden is a city in Weber County, Utah, United States. Ogden serves as the county seat of Weber County. The population was 82,825 according to the 2010 Census. The city served as a major railway hub through much of its history, and still handles a great deal of freight rail traffic which makes it a...
and where US-89/91 split and then rejoined on what is now State Route 126
Utah State Route 126
State Route 126 is a highway completely within the Ogden-Clearfield metropolitan area in northern Utah that makes a loop around Interstate 15 in its more than twenty-one mile path. The street is given the names Main Street, 1900 West and 2000 West respectively from south to north. Previous to...
and State Route 26
Utah State Route 26
State Route 26 is a state highway in northern Utah running for in Weber County from Roy to Ogden. It serves as a diagonal route through the Ogden suburbs and the primary connector from northbound I-15 to eastbound I-84 and westbound I-84 to southbound I-15.-Route description:SR-26 begins at an...
. These highways form the Main Street through Kaysville
Kaysville, Utah
Kaysville is a city in Davis County, Utah, United States. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area. The population was 20,351 at the 2000 census, and 25,820 as of the 2008 estimates.-History:...
and Layton
Layton, Utah
-External links:*...
; State Street from the Layton-Clearfield
Clearfield, Utah
Clearfield is a city in Davis County, Utah, United States. The population was 25,974 at the 2000 census. The city grew drastically during the 1940s, with the formation of Hill Air Force Base, and in the 1950s with the nation-wide increase in suburb and "bedroom" community populations and has been...
border to Main Street in Clearfield though the city of Sunset
Sunset, Utah
Sunset is a city in Davis County, Utah, United States. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area. The population was 5,204 at the 2000 census...
turning into 1900 West at the Sunset-Roy
Roy, Utah
-Demographics:As of the census of 2010, there were 36,884 people, 10,689 households, and 8,604 families residing in the city. The population density was 4,853 people per square mile . There were 11,053 housing units at an average density of 1,455.3 per square mile...
border, then following 1900 W to a junction with Riverdale Road in Roy, then following Riverdale Road through Riverdale
Riverdale, Utah
Riverdale is a city in Weber County, Utah, United States. The population was 7,656 at the 2000 census. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area.-Geography:Riverdale is located at ....
, and then meeting back up with US-89 at Washington Blvd in Ogden.
Idaho
U.S. 91 formerly entered Idaho Falls along Yellowstone Highway, and returned to the course of modern I-15 north of town. The highway then proceeded north toward Monida PassMonida Pass
Monida Pass is a high mountain pass in the Rocky Mountains of the northwestern United States, at an elevation of 6870 feet above sea level on Interstate 15....
where the highway entered Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
. In some small towns streets used by the route are called "Old Highway 91".
Montana
In Montana the highway's alignment slightly changed with the construction of the Clark Canyon DamClark Canyon Dam
Clark Canyon Dam is an earthfill dam located in Beaverhead County, Montana, about 20 miles south of the county seat of Dillon. The dam impounds the waters of the Beaverhead River, creating a body of water known as Clark Canyon Reservoir...
. In Dillon
Dillon, Montana
- Notable residents :* Ed Barker - NFL wide receiver - Washington Redskins* Cree Paul - [Where is she now?]* Charles Xavier Larrabee - owner of the nearby stock ranch Brooknook.* Lloyd Meeds - Politician, lobbyist, and navy officer....
the former route of the highway is now known as Atlantic Street and Montana Street. North of Dillon I-15 was built on a new alignment. The highway formerly joined with U.S. Route 10
U.S. Route 10
U.S. Route 10 is an east–west United States highway formed in 1926. Though it never became the cross-country highway suggested by the "0" as the last digit of its route number, U.S...
in Butte
Butte, Montana
Butte is a city in Montana and the county seat of Silver Bow County, United States. In 1977, the city and county governments consolidated to form the sole entity of Butte-Silver Bow. As of the 2010 census, Butte's population was 34,200...
and formed the main street of Boulder
Boulder, Montana
Boulder is a town in and the county seat of Jefferson County, Montana, United States. It is on the north bank of the Boulder River between Butte and Helena, slightly east of the Continental Divide, at the intersection of Interstate 15 and Montana Highway 69. The population was 1,300 at...
. The highway was routed through Helena
Helena, Montana
Helena is the capital city of the U.S. state of Montana and the county seat of Lewis and Clark County. The 2010 census put the population at 28,180. The local daily newspaper is the Independent Record. The Helena Brewers minor league baseball and Helena Bighorns minor league hockey team call the...
along what is now Montana Secondary Highway 518 and Montana Secondary Highway 229.
Major intersections
|-|rowspan=15|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...
|rowspan=5|Box Elder
Box Elder County, Utah
Box Elder County is a county located in the U.S. state of Utah. It lies on the north end of the Great Salt Lake, covering a large area north to the Idaho border and west to the Nevada border. Included in this area are large tracts of barren desert, contrasted by high, forested mountains. The...
|rowspan=3|Brigham City
Brigham City, Utah
Brigham City is a city in Box Elder County, Utah, United States. The population was 17,899 at the 2010 census. It is the county seat of Box Elder County. It lies on the western slope of the Wellsville Mountains, a branch of the Wasatch Range at the western terminus of Box Elder Canyon...
|0.000
|
|
|-
|1.965
|
|South end of US 89 overlap
|-
|3.920
|
|Grade separated interchange, westbound exit, eastbound entrance
|-
|rowspan=2|Mantua
Mantua, Utah
Mantua is a town in eastern Box Elder County, Utah, United States. The population was 687 at the 2010 census. Mantua was settled in the mid-19th Century when future LDS President and then apostle and head church authority in Box Elder County Lorenzo Snow sent settlers to the valley to grow flax....
|5.601
|Mantua Road
|Grade separated interchange, eastbound exit, westbound entrance
|-
|6.638
|500 North
|
|-
|rowspan=10|Cache
|rowspan=2|Wellsville
Wellsville, Utah
Wellsville is a city in Cache County, Utah, United States. The population was 3,432 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Wellsville is located at ....
|16.939
|
|
|-
|19.177
|
|
|-
|
|23.769
|
|
|-
|rowspan=3|Logan
Logan, Utah
-Layout of the City:Logan's city grid originates from its Main and Center Street block, with Main Street running north and south, and Center east and west. Each block north, east, south, or west of the origin accumulates in additions of 100 , though some streets have non-numeric names...
|26.651
|
|
|-
|26.886
|
|
|-
|27.148
|
|North end of US 89 overlap
|-
|North Logan
North Logan, Utah
North Logan is a city in Cache County, Utah, United States. The population was 8,269 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area...
|29.819
|
|
|-
|Smithfield
Smithfield, Utah
Smithfield is a city in Cache County, Utah, United States. The population was 9,495 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area, and is the second largest city in the area after the county seat, Logan...
|34.021
|
|
|-
|Richmond
Richmond, Utah
Richmond is a city in Cache County, Utah, United States. The population was 2,470 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area. Part of the film Napoleon Dynamite was filmed at Richmond. Richmond is home to three schools. An Elementary school, a middle...
|40.004
|
|
|-
|
|43.694
|
|
|-
|colspan=3|
|45.271
0.000
|colspan=2 align=center|Utah/Idaho state line
|-
|rowspan=13|Idaho
Idaho
Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....
|rowspan=2|Franklin
Franklin County, Idaho
Franklin County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 11,329 . The county seat and largest city is Preston. Franklin County is part of the Logan, Utah-Idaho Metropolitan Statistical Area.Established in 1913, Franklin County was named...
|rowspan=2|Preston
Preston, Idaho
Preston is a city in Franklin County, Idaho, United States. The population was 4,682 at the 2000 census. The city is the county seat of Franklin County. It is part of the Logan, Utah-Idaho Metropolitan Statistical Area.-History:...
|8.389
|
|South end of SH-36 overlap
|-
|9.265
|
|North end of SH-36 overlap
|-
|rowspan=7|Bannock
Bannock County, Idaho
Bannock County is a county located in the southeastern part of the U.S. state of Idaho. It was established in 1893 and named after the local Bannock tribe. It is part of the Pocatello, Idaho Metropolitan Statistical Area, which encompasses all of Bannock and Power counties. As of the 2000 Census...
|Downey
Downey, Idaho
Downey is a city in Bannock County, Idaho, United States. It is part of the 'Pocatello, Idaho Metropolitan Statistical Area'. The population was 613 at the 2000 census.-Geography:...
|37.070
|
|
|-
|
|42.462
35.900
|
|
|-
|colspan=4 align=center|US 91 overlaps
Concurrency (road)
A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...
with I-15 (exits 36–67)
|-
|rowspan=3|Pocatello
Pocatello, Idaho
Pocatello is the county seat and largest city of Bannock County, with a small portion on the Fort Hall Indian Reservation in neighboring Power County, in the southeastern part of the U.S. state of Idaho. It is the principal city of the Pocatello metropolitan area, which encompasses all of Bannock...
|66.806
0.000
|
|North end of I-15 overlap; South end of I-15 Bus. overlap
|-
|3.442
|
|North end of US 30 overlap
|-
|4.459
77.890
|
|North end of I-15 Bus. overlap
|-
|Chubbuck
Chubbuck, Idaho
Chubbuck is a city in Bannock County, Idaho, United States. It is part of the Pocatello, Idaho Metropolitan Statistical Area. The population was 9,700 at the 2000 census...
|80.020
|
|
|-
|rowspan=2|Bingham
Bingham County, Idaho
Bingham County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 41,735 . The county seat and largest city is Blackfoot. Bingham County comprises the Blackfoot, ID, Micropolitan Statistical Area.Bingham County was created January 13, 1885, and...
|
|97.024
0.000
|
|South end of I-15 Bus. overlap
|-
|Blackfoot
Blackfoot, Idaho
Blackfoot is a city in Bingham County, Idaho, United States. The population was 10,419 at the 2000 census. The city is the county seat of Bingham County. Blackfoot is self-designated the "Potato Capital of the World", because it claims to have the largest potato industry in the world...
|3.659
100.700
|
|North end of I-15 Bus. overlap
|-
|rowspan=2|Bonneville
Bonneville County, Idaho
Bonneville County is a county located in the U.S. state of Idaho. As of the 2010 census, the county had a population of 104,234. Its county seat and largest city is Idaho Falls...
|
|122.866
2.323
|York Road/Old I-15 Bus.
|
|-
|Idaho Falls
Idaho Falls, Idaho
Idaho Falls is a city in and the county seat of Bonneville County, Idaho, United States, and the largest city in Eastern Idaho. As of the 2010 census, the population of Idaho Falls was 56,813, with a metro population of 130,374....
|4.526
|
|
Notes: