One of the largest projects ever undertaken by State of Illinois wraps up


Chicago Construction News staff writer

The Illinois Department of Transportation (IDOT) has completed the Jane Byrne Interchange reconstruction, a multiyear project to modernize a key gateway into downtown Chicago and a critical transportation hub for the region and entire Midwest.

It’s one of the largest projects in state history and eliminates a notorious national bottleneck and improves safety, efficiency, and mobility across multiple modes of transportation while better connecting people and jobs throughout the Chicago area.

“Today, I’m proud to announce the reconstruction of the Jane Byrne Interchange is finally completed,” Gov. JB Pritzker said in a statement. “For almost a decade, Illinois’ first-rate workforce worked day in and day out to entirely reconstruct this massive project and in the last few years, IDOT accelerated and streamlined the construction process to get this done.

“The great men and women of Illinois’ construction industry persevered. They are the ones who made this happen. I know I speak for all of Illinois when I say that we couldn’t be more grateful for the labor and dedication of every single worker on this project.”

IDOT exceeded the participation goal on the Jane Byrne for minority- and female-owned businesses involved in the Disadvantaged Business Enterprise program. The initial goal of 18.23% for minority- and female-owned firms with contracts on the project was surpassed and reached 19.54%, representing a total value of $117.6 million to disadvantaged and emerging businesses.

The project also provided thousands of hours on-the-job training through the Highway Construction Careers Training Program.

“The completion of the Jane Byrne Interchange is an example of organized labor, businesses, neighborhoods, and elected officials coming together to prioritize and create good-paying, equitable jobs for Illinois workers,” said Illinois AFL-CIO President Tim Drea. “Together, we invested in a long overdue infrastructure upgrade that will usher Illinois into the 21st century and benefit future generations of Illinoisans.”

The $806.4 million project is the first major rehabilitation of the Jane Byrne since it was originally constructed more than 60 years ago. It is predicted to result in a 50% reduction in vehicle delays, saving motorists an annual 5 million hours previously spent sitting in traffic and $185 million in productivity. Vehicle emissions are anticipated to reduce by a third and the number of crashes are predicted to go down 25%.

“The Jane Byrne Interchange was one of the most complex projects in the country and most significant ever at IDOT. I’m proud and happy that we could deliver these improvements and benefits,” said Illinois Transportation Secretary Omer Osman. “I wish to thank the public and our stakeholders for their input and patience throughout construction.”

Construction started in 2013 with the Morgan Street bridge, the first of 10 bridges carrying local traffic that needed to be rebuilt to accommodate the interchange’s reconfigured footprint. To keep the interchange open throughout construction, the project was separated into 35 pieces and contracts.

The project used approximately 52 million pounds of steel, the equivalent of 2.5 times the weight of the Eiffel Tower, as well as 2,100 miles of rebar, the distance between Chicago and San Francisco. More than 223,000 cubic yards of concrete were required, which would fill 25,000 trucks. Also, 12 miles of storm sewer were installed.

Improvements and benefits include:

  • 19 bridges and 21 ramps reconstructed or rehabilitated
  • New northbound collector-distributor road created on the Dan Ryan and Kennedy expressways by relocating left-hand entrance ramps at Jackson and Adams streets and separating exit ramps to Washington Boulevard, Lake, Madison, and Randolph streets from mainline traffic
  • New storm water detention system under the Polk Street accident investigation site.
  • Additional lane added in each direction to the mainline Kennedy and Dan Ryan
  • Additional lane to the inbound Eisenhower ramp to the outbound Kennedy and to the inbound Dan Ryan flyover ramp to the outbound Eisenhower
  • Wider ramps to replace single-lane ramps with no shoulders
  • Local bridges rebuilt with either wider sidewalks, bike lanes or both
  • Peoria Street bridge rebuilt as an expansive walkway
  • New LED lighting and improved signage installed along with reconstructed or rehabilitated retaining and noise walls throughout the project area.
  • $10 million expansion of green spaces, including retaining wall vines, aesthetic upgrades, landscaping and tree plantings


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