Illinois Road Map showing the state routes, US highways, interstate highways, major roads, local connecting Road, secondary Road, important local road of the Illinois.
Illinois Roads and Highways Map
About Map: Map showing major roads, local connecting Road, secondary Road, Important Local Road of the Illinois, United States.
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Roads and Highways in Illinois
Illinois has a highly developed road network that supports heavy traffic, interstate commerce, and regional connectivity across the Midwest. Major interstate highways such as I-55, I-57, I-80, I-90, and I-94 link key cities including Chicago, Springfield, Rockford, and Champaign. U.S. and state highways extend across farmland, industrial areas, and smaller communities. With Chicago serving as a major transportation hub, Illinois’ road system plays a critical role in freight movement, daily commuting, and long-distance travel.
Major Highways in Illinois
| Highway | Type | Route Direction | Connects |
|---|---|---|---|
| I-55 | Interstate | North–South | Chicago, Springfield, St. Louis |
| I-57 | Interstate | North–South | Chicago, Champaign |
| I-80 | Interstate | East–West | Rock Island, Joliet |
| I-90 | Interstate | East–West | Chicago, Rockford |
| I-94 | Interstate | North–South | Chicago metro |
| US 20 | U.S. Highway | East–West | Rockford, Chicago |
| US 30 | U.S. Highway | East–West | Joliet, Aurora |
| US 45 | U.S. Highway | North–South | Chicago suburbs |
| US 51 | U.S. Highway | North–South | Bloomington, Decatur |
| IL 3 | State Highway | North–South | Mississippi River corridor |
| IL 29 | State Highway | North–South | Peoria, Springfield |
| IL 53 | State Highway | North–South | Chicago suburbs |
| IL 64 | State Highway | East–West | Northern Illinois |
| IL 390 | State Highway | East–West | Chicago metro |
Interstate Highways in Illinois
| Interstate | Route Direction | Key Cities Connected |
|---|---|---|
| I-24 | Southeast–Northwest | Metropolis area |
| I-39 | North–South | Rockford, Bloomington |
| I-55 | North–South | Chicago, Springfield |
| I-57 | North–South | Chicago, Champaign |
| I-64 | East–West | East St. Louis |
| I-70 | East–West | Vandalia, Effingham |
| I-72 | East–West | Quincy, Springfield |
| I-74 | East–West | Moline, Champaign |
| I-80 | East–West | Rock Island, Joliet |
| I-88 | East–West | Moline, Aurora |
| I-90 | East–West | Chicago, Rockford |
| I-94 | North–South | Chicago metro |
| I-255 | Loop | St. Louis metro |
| I-280 | Loop | Quad Cities |
| I-290 | East–West | Chicago metro |
| I-294 | Loop | Chicago suburbs |
| I-355 | North–South | Chicago suburbs |
Road Network in Illinois
Illinois’ road network includes interstate highways for high-speed, long-distance travel, U.S. highways that connect regional centers, and state highways serving cities, suburbs, and rural areas. Local roads provide access to neighborhoods, farmland, and industrial zones, supporting daily travel and economic activity across the state.
| Road Type | Description | Approx. Length |
|---|---|---|
| Interstate Highways | High-speed corridors | 2,200 miles |
| U.S. Highways | Regional connectors | 5,000 miles |
| State Highways | Statewide routes | 16,000 miles |
| Local Roads | City streets | 120,000+ miles |
| Rural Roads | Farm access | 90,000+ miles |
Illinois Roads & Highways Facts
| State | Illinois |
| Total Road Network | 213,000+ miles |
| Interstate Mileage | 2,200 miles |
| State Highway System | 16,000 miles |
| Total Lane Miles | 310,000+ miles |
| Major Interstate Routes | I-55, I-57, I-80, I-90, I-94 |
| Key Authority | Illinois Department of Transportation |
| Number of Interstates | 17 |
| Major Uses | Freight, commuting |
| Urban Road Network | Extensive metro systems |
| Longest Interstate | I-55 |
| Longest U.S. Highway | US 20 |
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