Interstate 490 (I-490), also known as O'Hare West Bypass and Western O'Hare Beltway, is a proposed electronic toll highway and a beltway near Chicago, Illinois, that would run along the west side of O'Hare International Airport. The tollway would connect I-294 (Tri-State Tollway) to a western access point to the airport. From there, it would continue northward to an extension of the Illinois Route 390 (IL 390) and I-90 (Jane Addams Memorial Tollway). The O'Hare Western Bypass is part of the Elgin–O'Hare Western Access (EOWA) project. Building the highway would affect the villages of Elk Grove Village, Wood Dale, Itasca, and Bensenville. The proposed route runs through the American Airlines Flight 191 crash site, the deadliest aviation accident in US history.