Illinois Route 390 (IL 390), previously known as the Elgin–O'Hare Expressway, now known as the Elgin–O'Hare Tollway, is a 9.8-mile-long (15.8 km) electronic toll highway in northeastern Illinois. IL 390 currently connects U.S. Route 20 (US 20, Lake Street) in Hanover Park to the intersection with Illinois Route 83 (IL 83) and Thorndale Avenue in Wood Dale. The only other towns it borders are Schaumburg and Roselle. Construction is underway to extend the road from IL 83 to the western edge of O'Hare International Airport.