The O'Hare Ring Road is a proposed, highly controversial Interstate-standard expressway near Chicago

Chicago

Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 that would run south from Interstate 90

Interstate 90

Interstate 90 is the longest Interstate Highway in the United States at . It is the northernmost coast-to-coast interstate, and parallels US 20 for the most part. Its western terminus is in Seattle, at Edgar Martinez Drive S. near Safeco Field and CenturyLink Field, and its eastern terminus is in...

 (Northwest Tollway

Northwest Tollway

The Jane Addams Memorial Tollway in Illinois is a 79-mile segment of Interstate 90 from Interstate 190 in far northwest Chicago to Illinois Route 75, one mile south of the Wisconsin state line. For 16 miles , Interstate 90 is concurrent with Interstate 39 and U.S. Route 51...

), to the still-unbuilt eastern segment of the Elgin-O'Hare Expressway

Elgin-O'Hare Expressway

The Elgin-O'Hare Expressway is an Interstate-standard freeway in northeast Illinois, United States. Contrary to its given name, the expressway does not enter either Elgin or O'Hare International Airport, giving it a somewhat infamous reputation as a "road to nowhere"...

, to a western access point into O'Hare International Airport

O'Hare International Airport

Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

, and then east to the Tri-State Tollway

Tri-State Tollway

The Tri-State Tollway is a U.S. toll road maintained by the Illinois State Toll Highway Authority in northeastern Illinois which is considered one of the most heavily traveled highways in the country...

. Building the highway would affect the villages of Elk Grove Village

Elk Grove Village, Illinois

Elk Grove Village is a municipality located in northeastern Illinois adjacent to O'Hare International Airport and the City of Chicago. Elk Grove Village encompasses in land area with located in Cook County and located in DuPage County, Illinois. The population was 32,745 at the 2010 census...

, Wood Dale

Wood Dale, Illinois

Wood Dale is a city in DuPage County, Illinois, United States. The population was 13,535 at the 2000 census.-Geography:Wood Dale is located at .According to the United States Census Bureau, the city has a total area of , all of it land.-Demographics:...

, Itasca

Itasca, Illinois

Itasca is a village in DuPage County, Illinois, United States. The population was 8,302 at the 2000 census.In 2009, BusinessWeek rated Itasca as the 'Best Affordable Suburb' in the state of Illinois...

 and Bensenville

Bensenville, Illinois

Bensenville is a village located primarily in DuPage County, Illinois, with a small section near O'Hare International Airport in Cook County, Illinois, overlapping into the city of Chicago. As of the 2000 census, the village population was 20,703. Bensenville is home to the Edge Ice Arena, home of...

.

In December, 2009, IDOT

Illinois Department of Transportation

The Illinois Department of Transportation is a state agency in charge of state-maintained public roadways of the U.S. state of Illinois. In addition, IDOT provides funding for rail, public transit and airport projects and administers fuel tax and federal funding to local juridictions in the...

finalized the routing of the western bypass.