List of Interstate Highways in Idaho

Interstate Highways of the Idaho State Highway System
Interstate 15 marker
Interstate 184 marker
Interstate 90 Business marker
Typical Interstate highway markers
Map
Interstate Highways highlighted in red
System information
Maintained by ITD
Length611.31 mi[1] (983.81 km)
Formed1956
Highway names
InterstatesInterstate n (I-n)
US HighwaysU.S. Highway n (US-n)
StateIdaho State Highway n (SH-n)
System links
  • Idaho State Highway System

The Interstate Highways in Idaho are the segments of the Dwight D. Eisenhower National System of Interstate and Defense Highways owned and maintained by the Idaho Transportation Department (ITD) in the U.S. state of Idaho. The state has five Interstate Highways that total approximately 611 miles (983 km) in length.[1]

  1. ^ a b "National Highway Freight Network Map and Tables for Idaho". Federal Highway Administration. 2015. Retrieved December 11, 2022.