State highway Boundary County, Idaho, United States
State Highway 1
North and South Highway Copeland – Porthill Branch Copeland – Porthill Road
ID 1 highlighted in red
Route information
Maintained by ITD
Length
11.185 mi[1] (18.001 km)
Existed
c. 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
Country
United States
State
Idaho
Counties
Boundary
Highway system
Idaho State Highway System
Interstate
US
State
← 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]
^Staff (January 29, 2008). "Milepost Log: State Highway 1". Idaho Transportation Department. Archived from the original on December 12, 2012. Retrieved October 4, 2008.
^Cite error: The named reference 1926-map was invoked but never defined (see the help page).
^Idaho Transportation Department (May 22, 2007). "Bonners Ferry Port of Entry". Archived from the original on October 23, 2008. Retrieved October 4, 2008.
^United States Department of Transportation. "America's Scenic Byways: International Selkirk Loop". Retrieved October 4, 2008.
^Kootenai National Wildlife Refuge (January 24, 2004). "International Selkirk Loop Receives Idaho State Scenic Byway Status". Bonners Ferry, Idaho: Kootenai National Wildlife Refuge.
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Global Information
US 95 near Copeland
Hwy 21 in Porthill
