Illinois Department of Transportation
Overview
 
The Illinois Department of Transportation (IDOT) is a state agency in charge of state-maintained public roadways of the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

. In addition, IDOT provides funding for rail, public transit and airport projects and administers fuel tax
Fuel tax
A fuel tax is an excise tax imposed on the sale of fuel. In most countries the fuel tax is imposed on fuels which are intended for transportation...

 and federal funding to local juridictions
Jurisdiction
Jurisdiction is the practical authority granted to a formally constituted legal body or to a political leader to deal with and make pronouncements on legal matters and, by implication, to administer justice within a defined area of responsibility...

 in the state. The Secretary of Transportation reports to the Governor of Illinois
Governor of Illinois
The Governor of Illinois is the chief executive of the State of Illinois and the various agencies and departments over which the officer has jurisdiction, as prescribed in the state constitution. It is a directly elected position, votes being cast by popular suffrage of residents of the state....

. IDOT is headquartered in unincorporated
Unincorporated area
In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 Sangamon County
Sangamon County, Illinois
Sangamon County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 197,465, which is an increase of 4.5% from 188,951 in 2000...

, located near the state capital, Springfield
Springfield, Illinois
Springfield is the third and current capital of the US state of Illinois and the county seat of Sangamon County with a population of 117,400 , making it the sixth most populated city in the state and the second most populated Illinois city outside of the Chicago Metropolitan Area...

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