U.S. Federal Route 45 is a north-south highway in Cook County. This is one of the longest counties that this highways passes through while in Illinois. It is one of the busiest north-south surface highways in this part of the county. U.S. Rt. 45 passes through the following towns in Cook County. Tinley Park
Hodgkins Countryside La Grange La Grange Park
Bellwood Melrose Park
U.S. Rt. 45 is multi-plexed in Cook County. U.S. Rt. 12, from near Hickory Hills to Des Plaines.