page_title: Idaho
section_title: Highways
hierarchical_section_title: Idaho / Transportation / Highways
context_page_description: Idaho is a state in the Pacific Northwest region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of approximately 1.7 million and an area of 83,569 square miles, Idaho is the 14th largest, the 12th least populous and the 7th least densely populated of the 50 U.S. states. The state's capital and largest city is Boise.
  For thousands of years Idaho has been inhabited by Native American peoples. In the early 19th century, Idaho was considered part of the Oregon Country, an area disputed between the United States and the British Empire. It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory. Idaho was eventually admitted to the Union on July 3, 1890, becoming the 43rd state.
context_section_description: Idaho is among the few states in the nation without a major freeway linking its two largest metropolitan areas, Boise in the south and Coeur d'Alene in the north. US-95 links the two ends of the state, but like many other highways in Idaho, it is badly in need of repair and upgrade. In 2007, the Idaho Transportation Department stated the state's highway infrastructure faces a $200 million per year shortfall in maintenance and upgrades. I-84 is the main highway linking the southeast and southwest portions of the state, along with I-86 and I-15.
  Major federal aid highways in Idaho:
  North/South
   US-89
   US-91
   US-93
   US-95
  West/East
   US-2
   US-12
   US-20
   US-26
   US-30
  Interstates
   I-15
   I-84
   I-86
   I-90
   I-184
caption: US-95 shield