List of bridges on the National Register of Historic Places in Idaho

This is a list of bridge

Bridge

A bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle...

s and tunnel

Tunnel

A tunnel is an underground passageway, completely enclosed except for openings for egress, commonly at each end.A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers...

s on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

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 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....

Name	Built	Listed	Location	County	Type
Boise River and Canal Bridge	1922	2007-02-07	Caldwell Caldwell, Idaho Caldwell is a city in and the county seat of Canyon County, Idaho, United States. The U.S. Census Bureau estimated the population to be 43,281, as of July 2009.Caldwell is the home of the College of Idaho. It is considered part of the Boise metropolitan area.... 43°41′20"N 116°41′10"W	Canyon Canyon County, Idaho Canyon County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 188,923. The county seat is Caldwell, and its largest city is Nampa.. Canyon County is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area.- History :The county was...	Warren camelback through truss
Bullion Tunnel	1910	1984-09-20	Avery Avery, Idaho Avery is a small unincorporated town nestled in the St. Joe River Valley in Shoshone County, Idaho, United States. Avery is located in the middle of the St. Joe District of the Idaho Panhandle National Forest... 47°24′4"N 115°42′4"W	Shoshone Shoshone County, Idaho Shoshone County is a county located in the U.S. state of Idaho. The county was established in 1864, named for the Native American Shoshone tribe. The population was 12,765 at the 2010 census. Shoshone County is commonly referred to as the Silver Valley, due to its century-old mining history...
Capitol Boulevard Memorial Bridge	1931	1990-11-05	Boise Boise, Idaho Boise is the capital and most populous city of the U.S. state of Idaho, as well as the county seat of Ada County. Located on the Boise River, it anchors the Boise City-Nampa metropolitan area and is the largest city between Salt Lake City, Utah and Portland, Oregon.As of the 2010 Census Bureau,... 43°36′32"N 116°12′26"W	Ada Ada County, Idaho Ada County is a county in the southwestern part of the U.S. state of Idaho. As of the 2010 Census, the county had a population of 392,365. The county seat and largest city is Boise, which is also the state capital. Other cities in the county with over 10,000 residents include Meridian, Eagle,...
Cold Springs Pegram Truss Railroad Bridge Cold Springs Pegram Truss Railroad Bridge The Cold Springs Bridge is a 208-foot, single span Pegram truss bridge in Blaine County, Idaho.The Cold Springs Bridge was constructed in 1884 at the Snake River Crossing in Ontario, Oregon. In 1917, the bridge was disassembled and relocated to Blaine County, Idaho. It crosses the Big Wood River 2...	1894, 1917	1997-07-25	Ketchum Ketchum, Idaho Ketchum is a city in Blaine County, Idaho, United States, in the central part of the state. The population was 3,003 at the 2000 census. It is in the Wood River Valley, adjacent to Sun Valley; the two communities share many resources and both sit in the same valley beneath Bald Mountain, with its... 43°39′14"N 114°20′58"W	Blaine Blaine County, Idaho Blaine County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 21,376. The county seat and largest city is Hailey. The county is home to the Sun Valley ski resort....	Pegram through truss
Conant Creek Pegram Truss Railroad Bridge	1894, 1911, 1916	1997-07-25	Grainville 44°0′52"N 111°21′51"W	Fremont Fremont County, Idaho Fremont County is a county located in the U.S. state of Idaho. The county was established in 1893, and was named for the explorer John C. Frémont. As of the 2000 census the county had a population of 11,819 . The county seat and largest city is St. Anthony...	Pegram through truss
Gimlet Pegram Truss Railroad Bridge Gimlet Pegram Truss Railroad Bridge The Gimlet Bridge is a 217-foot, single span Pegram truss bridge in Blaine County, Idaho.The Gimlet Bridge was constructed in 1894. In 1914, the bridge was disassembled and relocated to Blaine County, Idaho. It crosses the Big Wood River 6 miles south of Ketchum, Idaho. This bridge served the Union...	1894, 1914	1997-07-25	Ketchum Ketchum, Idaho Ketchum is a city in Blaine County, Idaho, United States, in the central part of the state. The population was 3,003 at the 2000 census. It is in the Wood River Valley, adjacent to Sun Valley; the two communities share many resources and both sit in the same valley beneath Bald Mountain, with its... 43°35′53"N 114°20′43"W	Blaine Blaine County, Idaho Blaine County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 21,376. The county seat and largest city is Hailey. The county is home to the Sun Valley ski resort....	Pegram through truss
Grace Pegram Truss Railroad Bridge	1894, 1913	1997-07-25	Grace Grace, Idaho Grace is a city in Caribou County, Idaho, in the United States. The population was 990 at the 2000 census.-History:The area of Grace was once inhabited by the Shoshone Indians. White settlement dates back to the mid-to-late 19th century. The Oregon Trail passed within of Grace... 42°35′6"N 111°44′5"W	Caribou Caribou County, Idaho Caribou County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 6,963. The county seat and largest city is Soda Springs, followed by Grace and Bancroft.- History :...	Pegram through truss
Ninth Street Bridge	1911	2001-09-14	Boise Boise, Idaho Boise is the capital and most populous city of the U.S. state of Idaho, as well as the county seat of Ada County. Located on the Boise River, it anchors the Boise City-Nampa metropolitan area and is the largest city between Salt Lake City, Utah and Portland, Oregon.As of the 2010 Census Bureau,... 43°36′34"N 116°12′29"W	Ada Ada County, Idaho Ada County is a county in the southwestern part of the U.S. state of Idaho. As of the 2010 Census, the county had a population of 392,365. The county seat and largest city is Boise, which is also the state capital. Other cities in the county with over 10,000 residents include Meridian, Eagle,...	Pratt through truss
North Fork Payette River Bridge	1933	1999-04-02	Smiths Ferry Smiths Ferry, Idaho Smiths Ferry is a census-designated place in Valley County, Idaho, United States. Its population was 75 as of the 2010 census.... 44°19′32"N 116°3′30"W	Valley Valley County, Idaho Valley County is a rural county located in west central Idaho in the United States. Established in 1917, it was named after the Long Valley of the North Fork of the Payette River, which extends over 30 miles from Payette Lake at McCall south to Cascade to Round Valley.The valley was formerly a...	Reinforced concrete arch
Owsley Bridge	1921	1998-09-18	Hagerman Hagerman, Idaho Hagerman is a town in Gooding County, Idaho, United States. The population was 768 at the 2007 census.-Geography:Hagerman is located at .According to the United States Census Bureau, the city has a total area of , all of it land.... 42°45′52"N 114°53′21"W	Gooding Gooding County, Idaho Gooding County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 14,155...	Cantilever Cantilever bridge A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from... ed Warren truss
Ririe A Pegram Truss Railroad Bridge	1894, 1914	1997-07-25	Ririe Ririe, Idaho Ririe is a city in Bonneville and Jefferson counties in the eastern part of the U.S. state of Idaho. It is part of the Idaho Falls, Idaho Metropolitan Statistical Area. The population was 656 at the 2010 census.- History :... 43°39′59"N 111°44′16"W	Jefferson Jefferson County, Idaho Jefferson County is a county located in the U.S. state of Idaho. The county was established in 1913, and was named after Thomas Jefferson, the third U.S. President. As of the 2000 Census the county had a population of 19,155 . The county seat and largest city is Rigby...	Pegram through truss
Ririe B Pegram Truss Railroad Bridge	1894, 1914	1997-07-25	Ririe Ririe, Idaho Ririe is a city in Bonneville and Jefferson counties in the eastern part of the U.S. state of Idaho. It is part of the Idaho Falls, Idaho Metropolitan Statistical Area. The population was 656 at the 2010 census.- History :... 43°39′37"N 111°44′25"W	Jefferson Jefferson County, Idaho Jefferson County is a county located in the U.S. state of Idaho. The county was established in 1913, and was named after Thomas Jefferson, the third U.S. President. As of the 2000 Census the county had a population of 19,155 . The county seat and largest city is Rigby...	Pegram through truss
St. Anthony Pegram Truss Railroad Bridge	1896, 1914	1997-07-25	St. Anthony St. Anthony, Idaho St. Anthony is a city in and the county seat of Fremont County, Idaho, United States. The population was 3,342 at the 2000 census. It is part of the Rexburg, Idaho Micropolitan Statistical Area.-Geography:St... 43°57′1"N 111°42′59"W	Fremont Fremont County, Idaho Fremont County is a county located in the U.S. state of Idaho. The county was established in 1893, and was named for the explorer John C. Frémont. As of the 2000 census the county had a population of 11,819 . The county seat and largest city is St. Anthony...	Pegram through truss
Washington Water Power Bridges	1929, 1930	1996-12-20	Post Falls Post Falls, Idaho Post Falls is a city in Kootenai County, Idaho, United States near the Idaho state line between Spokane, Washington, and Coeur d'Alene, Idaho. The population was 17,247 at the 2000 census, and grew to 27,574 people by the 2010 census, making it Idaho's tenth largest city.-History:Post Falls is... 47°42′40"N 116°57′8"W	Kootenai Kootenai County, Idaho Kootenai County is a county located in the U.S. state of Idaho. The county was established in 1864, named after Kootenai tribe. The entire county comprises the Coeur d'Alene, Idaho Metropolitan Statistical Area. The population was 138,494 at the 2010 census...	Concrete arch Arch bridge An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side... /girder Girder bridge A girder bridge, in general, is a bridge built of girders placed on bridge abutments and foundation piers. In turn, a bridge deck is built on top of the girders in order to carry traffic. There are several different subtypes of girder bridges:...

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