| La Grange Road | |
 La Grange Road as it passes through downtown La Grange | |
| Part of |    US 12 / US 20 / US 45 |
|---|---|
| South end |  US 30 / US 45 in Frankfort |
| North end | US 12 / US 45 Intersection of Oakton and Lee streets in Des Plaines |
Mannheim Road, also known as La Grange Road from Cermak Road to U.S. Route 30 (US 30; Lincoln Highway), is a north–south major street in the near-western suburbs of Chicago. It carries US 12 from Des Plaines to 95th St near Hickory Hills, US 45 between Des Plaines on southwards past Frankfort, Illinois and carries US 20 between Lake Street in Stone Park, Illinois and 95th St. near Hickory Hills.