U.S. Route 26 in Idaho

U.S. Highway 26 marker
U.S. Highway 26
Map
US-26 highlighted in red
Route information
Maintained by ITD
Length402.5 mi[1] (647.8 km)
Existed1951 (1951)[2]–present
Major junctions
West end US 20 / US 26 near Nyssa, OR
Major intersections
East end US 26 near Alpine, WY
Location
CountryUnited States
StateIdaho
CountiesCanyon, Ada, Elmore, Gooding, Lincoln, Blaine, Butte, Bingham, Bonneville
Highway system
  • Idaho State Highway System
SH-25 SH-27

U.S. Highway 26 (US-26) runs east–west across south central Idaho for 402.5 miles (647.8 km). US-26 enters the state from Oregon across the Snake River east of Nyssa, Oregon, concurrent with US-20 and exits into Wyoming northwest of Alpine. US-26 runs through the large population centers of Boise and Idaho Falls, as well as the smaller communities of Parma, Notus, Garden City, Shoshone, Richfield, Carey, Arco, Blackfoot, Swan Valley, and Irwin.

For a vast majority of its route, US-26 is two lanes and rural, with the exception of portions in and around major towns and cities. It does have significant four-lane segments within the Boise metropolitan area and east of Idaho Falls. Despite its extensive length, US-26 has many hundreds of miles that run concurrently with other highways. In fact, its first 138.97 miles (223.65 km) in the state consists of concurrencies with any one of five different highways, principally US-20 and Interstate 84 (I-84). It has additional lengthy concurrencies with US-93, US-20 again, and I-15.

US-26 does have one business route in the state of Idaho, which runs through the small community of Ririe northeast of Idaho Falls.

  1. ^ Cite error: The named reference US26 was invoked but never defined (see the help page).
  2. ^ Elbert, Chris; et al. (October 7, 2020). "ern end of US Highway 26". USEnds.com. Retrieved November 7, 2020.[self-published source]