| Dan Ryan Expressway | |
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| South Route Expressway | |
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| Maintained by IDOT | |
| Length: | 11.47 mi (18.46 km) |
| Existed: | 1961 – present |
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| South end: |
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I-55 in Chicago![]()
I-90 / Chicago Skyway in Chicago
The Dan Ryan Expressway is a freeway in the city of Chicago that runs from the Circle Interchange with I-290 near downtown Chicago through the South Side of the city. It is designated as both Interstate 94 and Interstate 90 south to 66th Street, a distance of 7.44 miles (11.97 km). It then becomes just Interstate 94 at the split with the Chicago Skyway (which leads to Interstate 90), with a remaining distance of 4.03 miles (6.49 km). This is a total distance of 11.47 miles (18.5 km). The freeway was named for Dan Ryan, Jr., a former president of the Cook County Board of Commissioners.