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LaSalle County - US 6 and IL 178 Intersection Improvement
The Illinois Department of Transportation (IDOT) has completed a Preliminary Engineering and Environmental (Phase I) Study for the purpose of improving the existing signalized intersection. The intersection of US 6 and IL 178 is located in the Village of North Utica, LaSalle County This existing signalized intersection is under the jurisdiction and maintenance of IDOT. Work has started on the phase II portion of the project which includes the preparation of contract documents to be bid on by contractors.
Note: IDOT projects typically have three distinct phases. Phase I (or the project Study) consists of developing the project scope, environmental studies and preliminary design of a project. Phase II (Design) consists of refining the design to develop contract plans and land acquisition. Phase III (Construction) consists of the actual construction of the project.
The study has considered various options to improve traffic flow at the intersection and has reviewed the costs, safety, user benefits and environmental impacts to arrive at the proposed scope of work. The proposed scope of work for this project is to convert the existing temporary traffic signal installation to a modern single lane roundabout. The roundabout will include splitter islands on all legs, a truck apron for large truck movements, improved drainage, lighting, landscaping, pavement markings and signing. The proposed roundabout is anticipated to reduce injury and fatality crashes and to match or exceed the traffic capacity of a comparable traffic signal installation. The construction of the improvement is proposed to be built in stages without any road closure. Access to local residences and businesses will be maintained throughout construction and any necessary entrance closures shall be coordinated with the owners. Minimal acquisition of permanent right-of-way and easements are needed. There will be no significant environmental impacts as part of this construction process.
Location Map
Phase I - Approved 7-10-19
- Intersection Design Study
- Various Phase I studies and Reports
- Local agency coordination
- Cost estimate
- Project approval
Phase II - Started
- Detailed Plans
- Purchase of any necessary property
Phase III
- Construction
The project is being processed as a State Approval Categorical Exclusion and no significant impacts were identified.
As the US 6 and IL 178 Roundabout project study progresses, IDOT will periodically update this website to assure that local residents and the motorists of Illinois are kept informed of project developments, public involvement opportunities, and construction related activities.
Contact Us
This website has been set up to provide residents, business owners and travelers with the information they need to know what is happening at the project location.
If this site has not answered all of your questions, please email us at Bradley.Duncan@illinois.gov or mail to:
Illinois Department of Transportation
700 E. Norris Drive Ottawa, IL, 61350
Please continue to visit the US 6 and IL 178 Roundabout Project Study website for periodic updates throughout the course of the project. The Illinois Department of Transportation looks forward to your continued input and support.
Exhibits
Preliminary Drawing
Roundabout Information
FHWA Information Brochure Roundabout A Safer Choice
FHWA Information Brochure Teamsafe Roundabout
Excerpt from 2018 Rules of the Road CH-4 Rotaries and Roundabouts
Figure 2B-22 Example of Regulatory and Warning Signs for one-lane Roundabout
Responder Brochure
IDOT is currently at the early stages of Phase I for this project. As we make changes, this website will be updated accordingly.
Photo Gallery
Contact Us
Illinois Department of Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764
(217) 782-7820 or TTY (866) 273-3681