INDOT is responsible for state roads, interstates and U. S. routes including adjacent overpasses and ramps on these roadways. Construction and maintenance of these roads is also INDOT’s responsibility along with traffic control devices along these roadways, including signs and traffic signals. Local cities, counties and towns are responsible for all other roadways that are not a state road, interstate or U.S. route. 
INDOT has six district offices across the state that handle day-to-day operations such as construction and detours, traffic signal operations, permits and maintenance operations, for example, filling potholes and plowing snow, along with various other responsibilities. Visit the Welcome to the INDOT Districts page to identify the appropriate district office.

For travel conditions on state roads, interstates and U.S. routes (road construction, road closures due to weather) throughout the state, visit TrafficWise or call 1-800-261-ROAD.

For other transportation related topics, handled by other agencies, please see contact information below:

  • Bureau of Motor Vehicles (license, titles, etc.) - 317-233-6000
  • Federal Motor Carrier Safety Administration - Federal DOT - 317-226-7474
  • Indiana Department of Revenue (oversize/overweight permits) - 317-615-7200
  • Indiana State Police Motor Carrier Division (state trucking issues) - 317-615-7373

If your vehicle or property is damaged (such as hitting a pothole on a state road, interstate or U.S. route) or your personal property is damaged by an INDOT vehicle (such as a mail box being struck) you may file a tort claim.

Consultants wishing to do business with INDOT must be prequalified. See the Consultants Prequalification page for more information.

Contractors wishing to do business with INDOT must be prequalified. See the Contractors Prequalification page for more information.

More information on doing business with INDOT, including Procurement, Requests for Proposals and Contract Letting Information, can be found by visiting the Doing Business with INDOT section.

Employment opportunities with INDOT and other state agencies can be found at the Indiana State Personnel Department.


INDOT maintains more than 11,000 centerline miles.

Indiana currently has 13 interstate highways; they are: I-64, I-65, I-69, I-70, I-74, I-80, I- 90, I-94, I-265, I-275, I-465, I-469 and I-865.

INDOT is responsible for maintaining nearly 6,000 bridges across the state.

INDOT regulates approximately 4,500 rail miles in Indiana.

More than 110 public access airports and more than 560 private access airports across the state are regulated by INDOT.

Approximately 3,500 employees across the state are employed by INDOT, making it one of the state’s largest agencies.

Historical Facts

Following reorganization in 1918, the Indiana State Highway Commission (ISHC) was established in 1919 by Indiana’s General Assembly to connect county seats and various towns and cities. The ISHC evolved into the Indiana Department of Highways (IDOH) and the IDOH became the Indiana Department of Transportation (INDOT) in 1989.

The first interstate built in Indiana was the first section of State Road 420, which later became I-80/I-94 in northern Indiana, opening in 1952.

The Indiana Toll Road was established in 1951 and constructed between 1954 and 1956.

Interstate 74 was the first interstate to cross Indiana. The first section opened in 1960 and the final section opened in 1967.

Interstate 465, that circles Marion County in central Indiana, started construction in 1959 and the first section opened in 1961; the final section was completed in 1970.

The final sections of Interstate 65 and 70 through downtown Indianapolis were completed in 1976.

Congress created The Highway Trust Fund in 1956 as a continuing source of funding to support the National System of Interstate and Defense Highways. INDOT currently receives funding from several sources, with the primary source being federal and state motor fuel taxes. The federal fuel tax currently is 18 cents per gallon on gasoline and 24 cents per gallon on diesel fuel Indiana state fuel taxes are 29 cents per gallon on gasoline and 27 cents per gallon on diesel fuel. INDOT also receives Indiana’s 7 percent sales tax on gasoline sales, a motor carrier surcharge tax, international registration program fees, and Indiana Bureau of Motor Vehicle fees.

Historical Transportation Material

Contact Information

If a topic is not addressed on this page, you may search the INDOT website from the Home page or e-mail for further assistance.


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