Idaho State Highway 81

State Highway 81 marker
State Highway 81
Map
Route information
Maintained by ITD
Length33.978 mi[1] (54.682 km)
Existed1972–present
Major junctions
South end SH-77 in Malta
Major intersections SH-77 in Declo
North end US 30 in Burley
Location
CountryUnited States
StateIdaho
CountiesCassia
Highway system
  • Idaho State Highway System
SH-79 I-84

State Highway 81 (SH-81) is a state highway in Cassia County, Idaho. The highway runs for 33.978 miles (54.682 km) from SH-77 in Malta to U.S. Route 30 (US-30) in Burley. It also has a short spur route connecting the highway to Interstate 84 (I-84) at the Yale Interchange.

Prior to its designation as SH-81 in 1972, the highway was part of U.S. Route 30S (US-30S), a multi-state national highway that traveled from Burley to Granger, Wyoming.[2]

  1. ^ "Milepoint Log: State Highway 81" (PDF). Idaho Transportation Department. January 26, 2016. Retrieved February 17, 2017.
  2. ^ Cite error: The named reference ITD-1972 was invoked but never defined (see the help page).