State Highway 1 marker

State Highway 1

North and South Highway Copeland – Porthill Branch
Copeland – Porthill Road
ID 1 highlighted in red
Route information
Maintained by ITD
Length11.185 mi[1] (18.001 km)
Existedc. 1926[2]–present
Tourist
routes		Part of the International Selkirk Loop
Major junctions
South end US 95 near Copeland
North end Hwy 21 in Porthill
Location
CountryUnited States
StateIdaho
CountiesBoundary
Highway system
  • Idaho State Highway System
← SH-200→ US 2

State Highway 1 (SH-1) is a state highway in Boundary County, in the U.S. state of Idaho. It extends 11.185 miles (18.00 km) from U.S. Route 95 (US-95) east of Copeland, north to British Columbia Highway 21 (BC 21) in Porthill. The route serves as a connector between Bonners Ferry, via US-95 south, Porthill, and Creston, BC. The highway is one of two border crossings from Idaho into British Columbia. The other crossing is at the US-95/BC 95 in Eastport.[3] 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 only international scenic byway in North America.[4][5]

Route description

SH-1 runs 11.92 miles (19.18 km) from U.S. Route 95 (US-95) east of Copeland, north to BC 21 in Porthill. The route links Bonners Ferry, via US-95 south, Porthill, and Creston, BC.[6] 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.[7][8]

History

SH-1 was originally created in the 1920s as part of Sampson Trail B, which ran from Boise north to Lewiston, Coeur d'Alene, before entering British Columbia at Porthill.[2] Later in the mid-1930s, Idaho adopted a new numbered highway system with SH-1 as one of the first highways.[9][10] The International Selkirk Loop, which uses SH-1, was formed in 1999.[11] The loop became an Idaho Scenic byway on January 21, 2004, as the Wild Horse Trail.[5]

Major intersections

The entire route is in Boundary County.

Locationmi[1]kmDestinationsNotes
Copeland0.0000.000 US 95Southern terminus
Porthill11.13017.912U.S. Customs Building
11.18518.001 Hwy 21Northern terminus; Continues into British Columbia as BC 21
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. 1 2 Staff (January 29, 2008). "Milepost Log: State Highway 1". Idaho Transportation Department. Archived from the original on December 12, 2012. Retrieved October 4, 2008.
  2. 1 2 Auto Road Atlas (Map) (1926 ed.). Rand McNally and Company. 1926. § A2.
  3. ↑ Idaho Transportation Department (May 22, 2007). "Bonners Ferry Port of Entry". Archived from the original on October 23, 2008. Retrieved October 4, 2008.
  4. ↑ United States Department of Transportation. "America's Scenic Byways: International Selkirk Loop". Retrieved October 4, 2008.
  5. 1 2 Kootenai National Wildlife Refuge (January 24, 2004). "International Selkirk Loop Receives Idaho State Scenic Byway Status". Bonners Ferry, Idaho: Kootenai National Wildlife Refuge.
  6. ↑ The Road Atlas (Map). Rand McNally. 2008. p. 31. § A2. ISBN 0-528-93961-0.
  7. ↑ State Highway 1 Overview Map (Map). Cartography by NATVEQ. Google Maps. 2008. Retrieved September 25, 2008.
  8. ↑ Idaho Official State Highway Map (Map) (2009 ed.). Cartography by State of Idaho. Idaho Transportation Department. 2009.
  9. ↑ Western States road map (Map) (1935 ed.). Cartography by H.M. Gousha Company. Standard Oil Company. 1935.
  10. ↑ Road map: Idaho, Montana, Wyoming (Map) (1937 ed.). Cartography by Rand McNally and Company. Texaco. 1937. Retrieved October 4, 2008.
  11. ↑ SlekrikLoop.org. "A Brief History of the Loop". Retrieved October 4, 2008.
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