North and South Highway Copeland – Porthill Branch Copeland – Porthill Road | ||||
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 | ||||
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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]
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]
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]
The entire route is in Boundary County.
Location | mi [1] | km | Destinations | Notes | |
---|---|---|---|---|---|
Copeland | 0.000 | 0.000 | US 95 | Southern terminus | |
Porthill | 11.130 | 17.912 | U.S. Customs Building | ||
11.185 | 18.001 | Hwy 21 | Northern terminus; Continues into British Columbia as BC 21 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
Media related to Idaho State Highway 1 at Wikimedia Commons