U.S. Route 30 in Idaho

U.S. Highway 30 marker
U.S. Highway 30
Map
US 30 highlighted in red
Route information
Maintained by ITD
Length455.481 mi[1] (733.026 km)
Existed1926 (1926)–present
Tourist
routes
Thousand Springs Scenic Byway
Major junctions
West end US 30 in Fruitland
Major intersections
East end US 30 near Dingle
Location
CountryUnited States
StateIdaho
CountiesPayette, Canyon, Ada, Elmore, Gooding, Twin Falls, Cassia, Minidoka, Power, Bannock, Caribou, Bear Lake
Highway system
  • Idaho State Highway System
SH-29 SH-31

U.S. Route 30 (US 30) runs northwest–southeast across the southern half of lower Idaho for 455.481 miles (733.026 km). US 30 enters the state from Oregon across the Snake River in Fruitland and exits into Wyoming east of Dingle. US 30 runs through the large population centers of Boise, Twin Falls, and Pocatello, as well as a plethora of smaller communities from Fruitland to Montpelier. The Thousand Springs Scenic Byway is a picturesque section of US 30 in southern Idaho between the towns of Bliss and Buhl, dipping down into the Hagerman Valley and a canyon of the Snake River.

The highway has four extensive concurrencies with Interstate Highways: Interstate 84 (I-84) twice, I-86, and I-15. Outside of its Interstate concurrencies, the route is largely two-lane and rural outside of portions through major towns and cities.

  1. ^ Cite error: The named reference US30 was invoked but never defined (see the help page).