IDOT Kennedy Expressway

The Kennedy Expressway is one of Chicago’s busiest and most important roadways, carrying more than 275,000 vehicles each day between O’Hare International Airport and downtown. After three decades since its last major rehabilitation, the aging infrastructure showed clear signs of wear. Bridges and pavement were deteriorating, overhead sign structures were reaching the end of their service life, and previous repairs had run their course. The Illinois Department of Transportation (IDOT) launched a $169 million rehabilitation effort to bring new life to the expressway and improve safety and reliability for the hundreds of thousands who rely on it daily.

The multi-year project is extensive: rehabilitating 36 bridges, restoring inbound and reversible lanes, replacing nearly 20 overhead sign bridges, upgrading the reversible lane control system, and modernizing signage and lighting. To limit disruption, construction was phased over three seasons, starting with inbound lanes in 2023, followed by the reversible lanes in 2024, and scheduled outbound work in 2025. Design solutions emphasized both durability and efficiency. Concrete latex overlays on the bridges were used to strengthen the decks and resist water damage, while also curing more quickly so traffic could return sooner. Roadway and ramp patching addressed deteriorated pavement, making commutes smoother and safer. Replacing the overhead sign bridges required careful timing and sequencing to ensure drivers continued to receive clear guidance through the corridor without gaps or conflicts.

Working within Chicago’s dense transportation network meant coordination was essential. The Kennedy’s reversible lanes, a unique system that switches direction to handle rush-hour traffic, had to be taken offline temporarily, adding pressure to complete work quickly. At the same time, the Chicago Transit Authority’s “L” trains, which run adjacent to and beneath the expressway, stayed in full operation throughout construction.

As the project progresses, inbound work is complete, reversible lanes are scheduled to reopen, and outbound improvements will follow in 2025. Once finished, the Kennedy Expressway will be safer, more reliable, and more efficient for decades to come, helping Chicago remain connected and keeping its commuters, visitors, and goods moving every day.