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The County of DuPage
Wheaton, Illinois

75th Street - Lyman Avenue to Exner Road / Williams Street

Updated:Monday, August 3, 2020

Project Location(s)

C.H. 33 75th Street
Lyman Avenue to Exner Road/Williams Street

Short Description of Work

The project includes widening eastbound 75th Street between Lyman and Fairmount to add a right turn lane; widening the north leg of Fairmount to provide separate southbound right, through, and left turn lanes; reconfiguring the medians at Fairmount to improve safety of the left turns; widening and reconfiguring the medians at Fairview to provide eastbound dual left turn lanes and a westbound right turn lane; reconfiguring the medians at Williams/Exner to improve safety of the left turns; storm sewer improvements; sidewalk improvements; traffic signal replacements at 75th/Fairmount, at 75th/Fairview, and at 75th/Exner-Williams; and pavement resurfacing. 

Traffic Control

The project will be constructed in several stages, with 75th Street and side streets reduced to one lane in each direction and maintaining left turn lanes at most locations throughout most of the construction duration.

A work zone speed limit of 35 mph has been posted on 75th Street. Please slow down and pay attention to changing conditions.

Contract Cost


Completion Date

110 Working Days are allowed per the special provisions.

Construction Status

  • Temporary traffic signals have been installed at 75th/Fairmount, 75th/Fairview, and 75th/Exner-Williams.
  • Traffic has been reduced to one lane in either direction and a work zone speed limit of 35 mph has been posted.
  • The existing traffic signals have been removed.
  • The contractor has begun removing curb and medians to complete the realignment or widening of left turn lanes.

    Although relocation of utility facilities is required and the DuPage County Division of Transportation issues permits to the utilities within the Right-Of-Way, the D.O.T. does not directly control the work of the various utilities.
    Nicor Gas has completed relocating a 8" gas main along the south side of 75th Street.
    ComEd has begun the relocation of several poles, and is in the process of relocating an underground duct.
    AT&T will complete relocation of a fiber optic line after ComEd has completed their relocation work near Lyman.

Plans, Special Provisions and Bid Details

Link to the IDOT (Illinois Department of Transportation) website for plans, special provisions, and addenda.
(Item 179 on the March 6, 2020 letting)

Function/RoleResponsible Party

R.W. Dunteman Company
600 S. Lombard Road
Addison, IL 60101
P. O. Box 1129
Addison, IL 60101
(630) 953-1500

Design Engineer

2IM Group, LLC
Chicago, IL

Resident Engineer

STV, Inc.
Chicago, IL

Project Engineer

Steve Mlynarczyk, P.E. (DuPage County)
(630) 407-6900