I-55 Stevenson Expressway

I-55 Stevenson Expressway
State	IL
Route	Interstate 55
Alternate name	Stevenson Expressway
Length mi	???.??
Established	1964
Direction a	West
Terminus a	Route 53 in Chicago
Direction b	East
Terminus b	I‑294/I‑355 near South Holland

I-55 Stevenson Expressway The I‑55 Stevenson Expressway is a controlled‑access highway in northeastern Illinois serving the Chicago metropolitan area and connecting downtown Chicago with southern suburbs such as Joliet, Bolingbrook, and Downers Grove. It forms a segment of the federal Interstate Highway System corridor linking Chicago to St. Louis and Memphis via I‑55 and supports commuter, freight, and intercity traffic for agencies including the Illinois Department of Transportation and the Metropolitan Planning Council.

Route description

The expressway begins near Downtown adjacent to United Center and the Near West Side, proceeds southwest past neighborhoods such as McKinley Park and Bridgeport, and continues through suburbs including Westchester, Oak Brook, Naperville, and Bolingbrook toward Will County and Joliet. Major interchanges include connections to I‑90/I‑94 near the Kennedy Expressway, I‑294 (Tri‑State Tollway), I‑88, and I‑80, as well as access to O'Hare via feeder routes. The corridor parallels rail lines such as BNSF Railway and Metra commuter corridors, and crosses waterways including the Chicago Sanitary and Ship Canal and Des Plaines River.

History

Construction of the corridor took place during the postwar expansion of the Interstate Highway System under the Federal Aid Highway Act of 1956 and involved planning by the Illinois State Toll Highway Authority and the Illinois Department of Transportation. The route was named for Adlai Stevenson II and opened in stages during the 1950s and 1960s, coinciding with urban renewal projects in Chicago and suburban growth in Will County and DuPage County. Major historical events affecting the expressway include expansions linked to traffic demands from the 1970s energy crisis, reconstruction projects related to the Chicago Transit Authority and Metra improvements, and infrastructure funding debates involving elected officials such as Richard J. Daley and Rod Blagojevich.

Exit list

Key exits provide access to destinations like United Center, Midway Airport, University of Chicago satellite facilities, and commercial centers such as Woodfield Mall via feeder roads. Interchanges of particular importance include junctions with I‑294, I‑88, I‑80, and state routes including IL‑50 and IL‑83. Service plazas, park‑and‑ride facilities coordinated with Metra and Pace suburban bus services, and truck staging areas support freight flows to facilities like Joliet Steel Mill and regional distribution centers operated by companies such as Amazon and UPS.

Traffic and usage

The expressway carries a mix of commuter traffic to downtown Chicago and intercity freight bound for the Port of Chicago and Midwestern distribution networks. Peak weekday volumes reflect commuter patterns influenced by employers like CME Group, AbbVie, and Walgreens Boots Alliance, as well as seasonal spikes tied to events at Soldier Field and the Chicago Auto Show. Freight movements along the corridor interface with rail freight carriers including Union Pacific Railroad, BNSF Railway, and local intermodal terminals administered by entities such as the Metropolitan Pier and Exposition Authority and Will County Center for Economic Development.

Maintenance and improvements

Maintenance responsibility rests primarily with the Illinois Department of Transportation, with capital improvements funded through state bonds, federal grants from the United States Department of Transportation, and regional measures approved by bodies such as the Chicago Metropolitan Agency for Planning. Recent programs have included pavement rehabilitation, interchange reconstruction, implementation of intelligent transportation systems coordinated with Chicago Department of Transportation, and noise‑barrier installations near residential areas like Bridgeview. Partnerships with private contractors and engineering firms such as Bechtel Corporation and AECOM have supported design–build projects to upgrade bridges, ramps, and drainage systems.

Incidents and safety records

The corridor has experienced high‑profile incidents including multi‑vehicle collisions during winter storms managed by the National Weather Service Chicago office and emergency responses coordinated with Chicago Fire Department and Illinois State Police. Safety measures implemented after major crashes have included ramp redesigns, increased patrols by the Illinois State Police, and traffic cameras integrated with the Illinois Tollway and regional traffic management centers. Crash‑data analysis by the National Highway Traffic Safety Administration and local agencies has informed targeted improvements to reduce rear‑end collisions and improve freight safety near intermodal terminals.

Category:Roads in Illinois