South of downtown Chicago, I-94 serves the southeast suburbs of Chicago, including Dolton, Calumet City, and South Holland, Illinois, until it joins Interstate 80 on the Kingery Expressway, which finally enters Indiana east of Lansing, Illinois.

I-94 has ten lanes (five in each direction) from the exit ramps of the Circle Interchange to the Stevenson Expressway. It then splits into a 14 lane expressway on the Dan Ryan, with three and four lanes alternating between the local and express lanes in both directions. At the Chicago Skyway, a two lane ramp carries traffic to I-90, leaving ten lanes (five in each direction) running south to the I-57/I-94 junction.

From I-57 to Cottage Grove Avenue, I-94 has four lanes (two lanes each way), with six lanes (three lanes each way) between Michigan Avenue and Cottage Grove Avenue. The freeway connection ramp to Stony Island Avenue has four lanes (two in each direction). I-94 then has six lanes (three in each direction) south to I-80. On the ramps to and from I-80, I-94 has two lanes in each direction. On I-80 itself, I-94 widens to eight lanes (four in each direction) to the state line.

The section including the Southland Interchange with I-80 and 294 was reconfigured as part of the Kingery Expressway reconstruction project, completed in 2007, including 4 lanes south of 159th Street, with the split between I-80 and 94 East to the left, and I-80 West, I-294 North, and Ill. 394 South on the right located north of the 170th St. overpass. The configuration of I-80 and 94 is discussed in connection with the Kingery Expressway.

en.wikipedia.org/wiki/Interstate_94_in_Illinois