|Headquarters||3311 W. State St Boise, Idaho|
|Parent agency||State of Idaho|
The Idaho Transportation Department (ITD) is the state of Idaho governmental organization responsible for state transportation infrastructure. This includes ongoing operations and maintenance as well as planning for future needs of the state and its citizens. The agency is responsible for overseeing the disbursement of federal, state, and grant funding for the transportation programs of the state. 
Idaho's state transportation system consists of more than 12,200 miles (19,600 km) (lane miles) of roads, more than 1,800 bridges, approximately 1,630 miles (2,620 km) of rail lines, 126 public-use airports, and the Port of Lewiston.
In 1913 the Idaho State Legislature created the State Highway Commission. The group consisted of the Secretary of State, the State Engineer and three other members to be appointed by the governor. The Commission was empowered to:
- plan, build and maintain new state highways
- alter, improve or discontinue any state highway
- purchase, condemn, or otherwise obtain necessary easements
- have general supervision of all highways within the state
- expend the fund created for the construction, maintenance and improvement of state highways
- maintain and improve state highways
- make and enforce rules
- employ a Chief Engineer and assistants
- supervise registration of vehicles
- keep a complete record of all activities and expenses 
In 1919, the Commission was abolished and its functions were transferred to a Bureau of Highways in the Department of Public Works.  A property tax was enacted by the Legislature to fund roads for the state and bonds were issued to build a highway system.
In 1950, the Idaho Department of Highways was reorganized and placed under the direction of a governing Board. In 1974, the Idaho Department of Highways became the Idaho Transportation Department. The Department of Motor Vehicles originally reported to the Idaho Department of Law Enforcement, but was transferred to ITD in 1982.
ITD is organized into six divisions and six district offices. The agency serves under an appointed seven member Idaho Transportation Board. The board establishes state transportation policy and guides the planning, development and management of the Idaho transportation network. The board is appointed by the governor. One board member represents each of the six regional districts. A seventh member is appointed as chairman of the board.
The department has the following six divisions:
- Human Resources
- Motor Vehicles  
- Transportation Performance
- District 1 : Benewah, Bonner, Boundary, Kootenai, and Shoshone counties. Headquartered in Coeur d'Alene.
- District 2 : Clearwater, Idaho, Latah, Lewis, and Nez Perce counties. Headquartered in Lewiston.
- District 3 : Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette, Valley, and Washington counties. Headquartered in Boise.
- District 4 : Blaine, Camas, Cassia, Gooding, Jerome, Lincoln, Minidoka, and Twin Falls counties. Headquartered in Shoshone.
- District 5 : Bannock, Bear Lake, Bingham, Caribou, Franklin, Oneida, and Power counties. Headquartered in Pocatello.
- District 6 : Bonneville, Butte, Clark, Custer, Fremont, Jefferson, Lemhi, Madison, and Teton counties. Headquartered in Rigby.
- ITD Executive Team Biographies accessed 2 April 2009
FAQ, ITD, 2007, retrieved 2007-04-22,
The transportation department also oversees federal grants to 15 rural and urban public transportation systems, provides state rail planning and rail-project development and supports bicycle and pedestrian projects.
- Idaho's highway history, 1863-1975, Boise, ID: Idaho Transportation Department, 1985, pp. 36, 62, OCLC 11855599
- Wood, Colin (2018-09-04). "DMV service outages in Idaho shaping up as major issue in November election The governor says fixing the driver's license system is one of the state's highest priorities". statescoop. Retrieved 2018-09-05.
- Russell, Betsy (2018-09-02). "Jordan calls DMV contract a 'boondoggle,' Little is 'frustrated'". The Spokesman Review. Retrieved 2018-09-05.