What is the purpose of this project?
Improve operating conditions at interchanges within the project corridor, reduce congestion, and provide geometric modifications that improve safety and provide continuity with adjacent roadway segments.
What are the biggest benefits of the project?
What is the estimated completion date of the overall project?
The project is expected to be substantially complete by the end of 2027.
Are there any roadway closures planned for this project?
Are there any major milestones over the course of the project?
(Estimated milestone dates are listed below, and subject to change)
How will the project affect my regular commute?
Will there be noise walls and where will they be located?
The existing noise wall southeast of the System Interchange will be replaced in kind. Additionally, the center of I-39 will be shifted westerly from Mulford Road to Harrison Avenue/U.S. 20 so that the new added lanes will not be closer to the homes east of the corridor.
Why are trees being removed?
Tree removal is necessary to make way for the widened pavement that will meet updated geometric standards, providing safer travel.
How will stormwater runoff be addressed?
Detention ponds will be added to reduce stormwater runoff where feasible.
Improve operating conditions at interchanges within the project corridor, reduce congestion, and provide geometric modifications that improve safety and provide continuity with adjacent roadway segments.
What are the biggest benefits of the project?
- To improve capacity and operation by providing 3 through lanes on I-39 plus auxiliary lanes.
- Providing two northbound and two southbound ramps configured to a 70 m.p.h. design speed at the I-39/U.S. 20 system interchange.
- Eliminating low speed loop ramps at the Harrison Avenue/U.S. 20 interchange.
- To improve safety by eliminating substandard interchange ramps at both interchanges.
- To improve deteriorated roadway conditions with new pavement.
What is the estimated completion date of the overall project?
The project is expected to be substantially complete by the end of 2027.
Are there any roadway closures planned for this project?
- Perryville Road, Mulford Road, and Linden Road will be closed at various phases to construct the new bridges. Detours will be provided. Perryville and Mulford will not be closed at the same time.
- At least 2 lanes in each direction will be open on I-39/U.S. 20 mainline and Harrison Avenue during daytime hours. Occasional nighttime lane closures may be implemented.
- All ramp movement will be maintained in both interchanges.
Are there any major milestones over the course of the project?
(Estimated milestone dates are listed below, and subject to change)
- Perryville Road pavement and bridges completion dates are anticipated at the end of 2023.
- System Interchange pavement and bridge completion dates are anticipated at the end of 2024. This includes Mulford Road and Linden Road.
- Harrison Avenue DDI pavement and bridges completion dates are anticipated at the end of 2025.
- Mill Road and the Kishwaukee River Bridge completion dates are anticipated at the end of 2026.
- Mainline I-39 pavement and bridges completion dates are anticipated at the end of 2027.
- Noise wall completion dates are anticipated by the end of 2027.
How will the project affect my regular commute?
- Detours will be provided for the closures of Perryville Road, Mulford Road, and Linden Road.
- Daytime lane closures are not anticipated on I-39/U.S. 20 mainline or Harrison Avenue/U.S. 20.
- All ramp movements will be maintained.
- Delays may be encountered due to traffic slowdowns in work zones.
Will there be noise walls and where will they be located?
The existing noise wall southeast of the System Interchange will be replaced in kind. Additionally, the center of I-39 will be shifted westerly from Mulford Road to Harrison Avenue/U.S. 20 so that the new added lanes will not be closer to the homes east of the corridor.
Why are trees being removed?
Tree removal is necessary to make way for the widened pavement that will meet updated geometric standards, providing safer travel.
How will stormwater runoff be addressed?
Detention ponds will be added to reduce stormwater runoff where feasible.
