|Maintained by IDOT|
|Length:||17.95 mi (28.89 km)|
|Existed:||1964 – present|
|South end:||I-55 / County Line Road in Burr Ridge|
| I-294 in Indian Head Park
US 12 / US 20 / US 45 in Countryside
IL 171 in Summit
IL 43 in Summit
IL 50 in Chicago
I-90 / I-94 in Chicago
|North end:||US 41 / I-55 in Chicago|
Illinois state highway system
Illinois Tollway system
The Adlai E. Stevenson Expressway is the name given to Interstate 55 within Cook County, Illinois. I-55 is a major Interstate highway leading southwest out of the city of Chicago in Illinois. At the Cook County-DuPage County boundary, the name "Stevenson Expressway" is no longer used, but I-55 continues on in a southwesterly direction across Illinois until it crosses the Mississippi River at St. Louis, Missouri.
The eastern terminus of the Stevenson Expressway (and of I-55 as a whole) is located at U.S. Highway 41, recognized by Chicagoans as Lake Shore Drive. It is the Illinois Department of Transportation that officially defines the western "terminus" of the Stevenson at the DuPage County line, at Burr Ridge although local radio traffic reports and highway maps refer it as such as far west as I-355 North-South Veterans Tollway in Bolingbrook. The Stevenson "officially" has a total length of 17.95 miles (28.89 km).
The expressway opened on October 24, 1964 as the Southwest Expressway. It was renamed after Adlai Stevenson, the former governor of Illinois, on September 1, 1965 a month and a half after his death. The Stevenson's original termini were U.S. Highway 66 in DuPage County to the west, and the Dan Ryan Expressway to the east.
In 1999–2000, the expressway was completely rebuilt from Central Avenue north to Lake Shore Drive, including the ramps to the Dan Ryan. IDOT was criticized at the time for not adding a fourth lane in each direction to the highway.
||Burr Ridge||276.43||444.87||276||County Line Road||Split into exits 276A (south) and 276B (north)|
||Indian Head Park||277.08||445.92||276C||Joliet Road||Northbound exit, southbound entrance|
|Indian Head Park –
|277.64||446.82||277||I-294 (Tri-State Tollway) – Indiana, Wisconsin||Split into exits 277A (north) and 277B (south) northbound; no exit 277B southbound; no access from southbound I-55 to southbound I-294 or from northbound I-294 to northbound I-55|
|278.99||448.99||279||US 12 / US 20 / US 45 (La Grange Road) to I-294 south (Tri-State Tollway)||Split into exits 279A (east/south) and 279B (west/north)|
|Summit||282.32||454.35||282||IL 171 (1st Avenue)||Split into exits 282A (south) and 282B (north) northbound|
|283.19||455.75||283||IL 43 (Harlem Avenue (7200 West))|
|Chicago||285.93||460.16||285||Central Avenue (5600 West)|
|286.96||461.82||286||IL 50 (Cicero Avenue) (4800 West)|
|287.98||463.46||287||Pulaski Road (4000 West)|
|289.00||465.10||288||Kedzie Avenue (3200 West)||Southbound exit and northbound entrance|
|289.52||465.94||289||California Avenue (2800 West)||Northbound exit and southbound entrance|
|290||Damen Avenue (2000 West)|
|291||Ashland Avenue (1600 West)||Northbound exit and southbound entrance|
|292.63||470.94||292, 293B||I-90 / I-94 (Dan Ryan Expressway) – Indiana, Wisconsin||Split into exits 292A (east) and 292B (west) northbound; split into exits 292 (west) and 293B (east) southbound|
|293.00||471.54||293A||Cermak Road – Chinatown (2200 South)||Northbound exit and southbound entrance|
|293.22||471.89||293A||State Street (0 East/West)||Southbound exit and northbound entrance|
|293.67||472.62||293B||Martin L. King Drive (400 East)||Northbound exit and southbound entrance|
|294.38||473.76||294||US 41 (Lake Shore Drive)||Freeway ends; northbound exit to and southbound entrance from Lake Shore Drive; split into exits 294A (north) and 294B (south) northbound; roadway continues north to Fort Wilkins State Park, Michigan via Lake Shore Drive|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Because the Stevenson Expressway section serves an urban area, the northernmost rest area on I-55 is in Livingston County, Illinois, approximately the midpoint between Chicago and Springfield.
- Chicago Public Library: Timeline
- Historic, Current & Average Travel Times For The Stevenson Expressway