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New Website for Illinois 146 Improvements

CARBONDALE – The Illinois Department of Transportation is inviting the public to learn more and comment about proposed improvements to Illinois 146 from U.S. 45 to west of Interstate 24 located in Vienna, in Johnson County. Instead of hosting a regular public meeting, IDOT will share details on the project and encourage public participation from May 3 to May 17 through a new website,

IDOT has identified an improvement to widen and resurface Illinois 146 from the Vienna City Park east to a new roundabout at the intersection of Red Bud Lane/Old Metropolis Road. Funding for the project is included in the Rebuild Illinois capital plan. The widening and resurfacing project is expected to be underway during the 2023 construction season.

At, the public can view aerial photography with proposed improvements, a simulation of the roundabout, proposed typical sections, a safety overview and comment online.

Physical copies of the project materials will be on display at the Vienna City Hall, 205 N. Fourth Street. All comments received by May 21 will become part of the official public meeting record.

Written comments not submitted via the website should be sent to:

Illinois Department of Transportation

P.O. Box 100

Carbondale, IL 62903

Attn: Keith Roberts, IDOT Acting Region 5 Engineer

People without internet access can contact IDOT District 9’s Program Development Engineer Carrie Nelsen at (618) 549-3507 ext. 280 for more information about the project.