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City of Warrenville
28W701 Stafford Place
Warrenville, IL 60555
Ph: 630-393-9427
Mack Road Bridge and Bike Path Preliminary Engineering
Phase I/Preliminary Engineering

Project Overview: 
In December 2015, the City was awarded federal Surface Transportation Program (STP) funding that will cover 75% of construction costs and construction engineering to add a bike path along the south or north sides of Mack Road, just east of Route 59. The Phase I engineering study consists of 0.36 miles of a 10 foot wide bike path.  The proposed improvements include pedestrian signal modifications at the intersection of Route 59 and Mack Road, a 10-foot wide asphalt path, pedestrian/bike path bridge improvements over the West Branch of the DuPage River, and a connection to the existing trail system in the Blackwell Forest Preserve.

On May 15, 2017, the City Council approved Alternative 3 as the City’s preferred alternative.  This alternative provides the 10-foot wide asphalt path on the north side of Mack Road, widens the existing Mack Road bridge, and avoids complications such as a gas utility line, a mid-block trail crossing, high quality and environmentally sensitive Forest Preserve property and modifications to the existing dog park/canoe launch on the south side of Mack Road.  City staff, The Forest Preserve District, Winfield Township, and the City’s Bicycle and Pedestrian Advisory Commission all support this conceptual Alternative.  See the Staff Memo and Alternatives here

In November 2017, City Council directed staff to apply for STP-Bridge funding to cover 80% of the engineering and construction costs associated with the replacement of Mack Road Bridge. In May 2018, the City was awarded Surface Transportation Bridge Program (STP-Br) funding for the replacement of the bridge.  

Consultant Selection: Engineering Resource Associates was selected as the most capable project team for the Phase I Mack Road Bike Path and Bridge Project.  

Schedule:  On Hold pending IDOT approval of STP-Br funding agreement.
Completed Steps:  
  • Selection of Preferred Alternative
  • Public Information Meeting (October 11, 2017 at 7pm)
  • Bridge Condition Report

Current Steps: 

  • Topographic Survey
  • Wetland Survey
  • Hydraulic/Riverine Survey and Analysis

Next Steps: 
  • Bridge Design
  • Project Development Report
  • Preliminary Plans

Estimated Construction: 2021/2022.