Interstate 86 (abbreviated I-86) is an intrastate Interstate Highway, located entirely within the state of Idaho. It runs from an intersection with Interstate 84 in Heyburn, Idaho to an intersection with Interstate 15 at Pocatello, Idaho. Interstate 86 connects the major eastern Idaho cities of Pocatello and Idaho Falls with the state's Magic Valley region.

Interstate 86 was originally numbered as Interstate 15W in the 1970s, however AASHTO decided it was better to have duplicate numbers in different parts of the country instead of having suffixes. (See Interstate 86 (east).) There was also an Interstate 15E in California at the time.

Length

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Miles	km	state
63	101	Idaho
63	101	Total

Major cities

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Bolded cities are officially-designated control cities for signs.

• Twin Falls, Idaho (via Interstate 84)
• Pocatello, Idaho

Intersections with other interstates

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• Interstate 84 in Heyburn, Idaho
• Interstate 15 in Pocatello, Idaho

Spur routes

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None

External links

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• Other links
  • Eric Buchanan's Interstate 86 East Photos
  • Eric Buchanan's Interstate 86 West Photos

Interstate Highway System | Interstate Highways in Idaho