Interstate 490 (Illinois) (English Wikipedia)

Sudo, Chuck (March 4, 2014). "The Sun Will Set On The Des Plaines Oasis March 16". Chicagoist. Archived from the original on June 29, 2019. Retrieved June 29, 2019.

chicagotribune.com

Pyke, Marni (December 19, 2009). "IDOT Passes on Bensenville for Western Bypass Around O'Hare". Daily Herald. Arlington Heights, IL. Archived from the original on June 8, 2011. Retrieved March 23, 2010.
Pykempyke, Marni (June 13, 2018). "Land Deal Hailed as 'Substantial Step' for Western Access to O'Hare". Daily Herald. Arlington Heights, IL. Retrieved March 6, 2019.

Illinois Department of Transportation. Roadway Improvements 203D (Map). Illinois Department of Transportation. Archived from the original on April 26, 2012. Retrieved December 24, 2011.

"EOWA Overview". Illinois State Toll Highway Authority.
"I-490 Tollway - I-490/I-294 Interchange Project". Move Illinois. Illinois State Toll Highway Authority. December 7, 2018. Retrieved December 6, 2022.
"I-490 Tollway - I-490/I-90 Interchange Project". Move Illinois. Illinois State Toll Highway Authority. September 6, 2018. Retrieved December 6, 2022.
"Capital Programs". Illinois State Toll Highway Authority. Retrieved March 6, 2019.
"EOWA Corridor Overview". Illinois State Toll Highway Authority. Retrieved March 6, 2019.
"Construction Begins on Interchange Connection for New I-490 Tollway on the Jane Addams Memorial Tollway (I-90)" (Press release). Illinois State Toll Highway Authority. September 12, 2018.
"I-490/I-90 Interchange Project - Illinois Tollway". www.illinoistollway.com. Retrieved December 28, 2023.

Robb, Tom (May 24, 2018). "Long Sought 'Ring Road' to Benefit Elk Grove Village". Journal & Topics. Retrieved March 6, 2019.
Rob, Tom (June 14, 2018). "Tollway, Railroad Dispute Could Be Near Resolution". Journal & Topics. Retrieved March 6, 2019.
Robb, Tom (December 7, 2018). "Des Plaines Oasis To Close Next Week For I-490 Project". Journal & Topics. Retrieved June 29, 2019.

Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

Rozek, Dan (August 28, 2011). "Tollway OKs 87 percent toll increase". The Courier-News. Archived from the original on March 23, 2012. Retrieved August 28, 2011.

Special Committee on U.S. Route Numbering (November 20, 2014). "Report to SCOH" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on January 28, 2019.
Borggren, Erica (October 6, 2014). "An Application from the State Highway or Transportation Department of Illinois for Establishment of an Interstate Route" (PDF). Letter to Bud Wright. Springfield: Illinois Department of Transportation – via American Association of State Highway and Transportation Officials Special Committee on U.S. Route Numbering.

Illinois Department of Transportation. Roadway Improvements 203D (Map). Illinois Department of Transportation. Archived from the original on April 26, 2012. Retrieved December 24, 2011.
Pyke, Marni (December 19, 2009). "IDOT Passes on Bensenville for Western Bypass Around O'Hare". Daily Herald. Arlington Heights, IL. Archived from the original on June 8, 2011. Retrieved March 23, 2010.
Special Committee on U.S. Route Numbering (November 20, 2014). "Report to SCOH" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on January 28, 2019.
Rozek, Dan (August 28, 2011). "Tollway OKs 87 percent toll increase". The Courier-News. Archived from the original on March 23, 2012. Retrieved August 28, 2011.
Sudo, Chuck (March 4, 2014). "The Sun Will Set On The Des Plaines Oasis March 16". Chicagoist. Archived from the original on June 29, 2019. Retrieved June 29, 2019.