State Highway 1 (SH-1) is a state highway in
Boundary County, in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...
of
Idaho
Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyomi ...
. It extends from
U.S. Route 95
US Route 95 (US 95) is a major north–south United States Numbered Highways, US Highway in the western United States. It travels through the states of Arizona, California, Nevada, Oregon, and Idaho, staying inland from the Pacific Coast ...
(US-95) east of
Copeland, north to
British Columbia Highway 21
Highway 21 is a cross-border spur in the Regional District of Central Kootenay in British Columbia. First opened in 1964, the highway travels 14 km (9 mi) northwest along the Kootenay River from its connection with Idaho State Highway ...
(BC 21) in
Porthill. The route serves as a connector between
Bonners Ferry
Bonners Ferry (Kutenai language: ʔaq̓anqmi) is the largest city and the county seat of Boundary County, Idaho, United States. The population was 2,543 at the 2010 census.
History
When gold was discovered in the East Kootenays of British ...
, via US-95 south, Porthill, and
Creston, BC. The highway is one of two border crossings from Idaho into
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...
. The other crossing is at the US-95/
BC 95 in
Eastport.
The highway is also known for being the only state highway in Boundary County, the two other highways are US-95 and
US-2. The highway is also part of the
International Selkirk Loop
The International Selkirk Loop is a scenic highway in the U.S. states of Idaho and Washington, as well as the Canadian province of British Columbia. The loop encircles the Selkirk Mountain Range, and offers several side trips aside from the mai ...
, the only international scenic byway in North America.
Route description
SH-1 runs from
U.S. Route 95
US Route 95 (US 95) is a major north–south United States Numbered Highways, US Highway in the western United States. It travels through the states of Arizona, California, Nevada, Oregon, and Idaho, staying inland from the Pacific Coast ...
(US-95) east of
Copeland, north to
BC 21 in
Porthill. The route links
Bonners Ferry
Bonners Ferry (Kutenai language: ʔaq̓anqmi) is the largest city and the county seat of Boundary County, Idaho, United States. The population was 2,543 at the 2010 census.
History
When gold was discovered in the East Kootenays of British ...
, via US-95 south, Porthill, and
Creston, BC. The road is the only state highway in Boundary County, the two other highways are US-95 and
US-2. The highway starts at an intersection with US-95 east of Copeland.
History
SH-1 was originally created in the 1920s as part of
Sampson Trail B, which ran from
Boise
Boise (, , ) is the capital and most populous city of the U.S. state of Idaho and is the county seat of Ada County. On the Boise River in southwestern Idaho, it is east of the Oregon border and north of the Nevada border. The downtown area' ...
north to
Lewiston,
Coeur d'Alene, before entering
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...
at
Porthill.
Later in the mid-1930s, Idaho adopted a
new numbered highway system with SH-1 as one of the first highways. The
International Selkirk Loop
The International Selkirk Loop is a scenic highway in the U.S. states of Idaho and Washington, as well as the Canadian province of British Columbia. The loop encircles the Selkirk Mountain Range, and offers several side trips aside from the mai ...
, which uses SH-1, was formed in 1999.
The loop became an Idaho Scenic byway on January 21, 2004 as the Wild Horse Trail.
[
]
Major intersections
See also
* List of state highways in Idaho
The Idaho Transportation Department (ITD) is responsible for the establishment and classification of a state highway network, including of roads that are classified as Interstate Highways, U.S. Highways, and state highways within the state of Id ...
* List of highways numbered 1
The following highways are numbered 1.
For roads numbered A1, see list of A1 roads.
For roads numbered B1, see list of B1 roads.
For roads numbered M1, see List of M1 roads.
For roads numbered N1, see list of N1 roads.
For roads numbered S ...
References
External links
{{commons category-inline, Idaho State Highway 1
001 001, O01, or OO1 may refer to:
*1 (number), a number, a numeral
*001, fictional British agent, see 00 Agent
*001, former emergency telephone number for the Norwegian fire brigade (until 1986)
*AM-RB 001, the code-name for the Aston Martin Valkyrie ...
Transportation in Boundary County, Idaho