Illinois DOT Expands its I-55 Express Lane Ambitions

A proposal to add express lanes on a notoriously congested stretch of I-55 that passes through the western Chicago suburbs could expand from $25 million to $700 million with the addition of an extra toll lane.

1 minute read

December 11, 2017, 1:00 PM PST

By James Brasuell @CasualBrasuell


The Illinois Department of Transportation is refining a proposal to add express toll lanes in each direction of a 25-mile stretch of I-55 between I-355 and I-90/94.

Gov. Bruce Rauner and IDOT proposed the express lanes last year, but IDOT recently proposed an expanded version of the plan: "having two new toll lanes in each direction from I-90/94 in the city to I-294, with one toll lane in each direction from I-294 to I-355," according to an article by Mary Wisniewski.

Wisniewski says the changes are designed to make the project "more attractive to developers, who could pay for all or part of the construction through a public-private partnership." The Illinois General Assembly would have to approve any proposed public-private partnership, and as we noted over the summer, the I-55 express lane project has not exactly sailed through the state government.

Monday, December 11, 2017 in Chicago Tribune

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 2, 2025 - Diana Ionescu

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Person wearing mask walking through temporary outdoor dining setup lined with bistro lights at dusk in New York City.

Restaurant Patios Were a Pandemic Win — Why Were They so Hard to Keep?

Social distancing requirements and changes in travel patterns prompted cities to pilot new uses for street and sidewalk space. Then it got complicated.

June 19, 2025 - Diana Ionescu

Aerial view of new neifhborhood under construction with enpty lots in foreground.

In California Battle of Housing vs. Environment, Housing Just Won

A new state law significantly limits the power of CEQA, an environmental review law that served as a powerful tool for blocking new development.

July 2 - CALmatters

Low-rise Pearl Sreet mall in Boulfer, Colorado.

Boulder Eliminates Parking Minimums Citywide

Officials estimate the cost of building a single underground parking space at up to $100,000.

July 2 - Boulder Reporting Lab

Two-story buildings with porches in walkable Florida neighborhood.

Orange County, Florida Adopts Largest US “Sprawl Repair” Code

The ‘Orange Code’ seeks to rectify decades of sprawl-inducing, car-oriented development.

July 2 - CNU Public Square