Beloit Road Construction Updates

Beloit Road Construction doesn’t mean we’re not open for business! Whether you are a visitor or resident, check here frequently for interstate construction updates.

Road Construction As of 12/16/2019

I-39/90 southbound expansion (south of US 14/Humes Road interchange to Hart Road bridge over I-39/90), Janesville to Beloit
Anticipated construction completion: Spring 2020
• Updated: This project is complete for the 2019 season. Please be attentive for crews completing minor finishing and restoration items on I-39/90 and local roadways.
o Two lanes remain open in each direction on their respective sides of the Interstate.
• Most local roadways under I-39/90 in Janesville are OPEN.
• Updated: County O/Delavan Drive under the Interstate in Janesville is CLOSED for remaining form work removal.
o 6 a.m. to 6 p.m. Tuesday (Dec. 17)
o Alternate local routes are required.
• Spring Brook/Ice Age National Scenic Trail under I-39/90 is OPEN.

I-39/90 expansion and I-43 reconstruction (Illinois state line to Hart Road; County X/Hart Road to Freeman Parkway), Beloit
Anticipated construction completion: Fall 2021
• Updated: One lane CLOSED on I-39/90 northbound from the Illinois state line to Cranston Road. Watch for crews and equipment near the travel lanes.
o 6 p.m. to 5 a.m. Monday night (Dec. 16)
o Significant backups and delays are expected on the Interstate in this area. Plan ahead, allow extra time and consider alternate routes!
• Updated: I-39/90 traffic is located on their respective sides, between Cranston Road and the Illinois state line.
o Three lanes are open on I-39/90 southbound and two lanes remain are open on the northbound Interstate.
o Access remains OPEN to the Beloit rest area.
• Updated: I-39/90 northbound ramp CLOSED to the Beloit rest area.
o 8 p.m. Thursday (Dec. 19) to 12 a.m. Friday (Dec. 20)
o Access to the I-43/WIS 81 interchange (Exit 185) will remain open for gas, food and lodging.
• I-43 traffic is shifted onto their respective sides from County X/Hart Road to I-39/90.
o Updated: Two lanes are expected to open each way by Friday, December 20.
• I-43 northbound ramp CLOSED to County X/Hart Road (Exit 2) near Beloit.
o 10 p.m. Monday (Dec. 16) to 1 a.m. Tuesday (Dec. 17)
o Alternate local routes are required.
• Loop ramps are CLOSED at the I-39/90 and I-43/WIS 81 interchange in Beloit.
o I-39/90 traffic must use Exit 185 to access I-43 or WIS 81/Milwaukee Road (view the navigation map).
o Ramps and crossroad traffic are controlled by traffic signals.
o Drivers on I-43 should be attentive for reduced speeds heading into Beloit.
• Colley Road under I-39/90, near Beloit, is CLOSED until spring 2020.
o Alternate local routes are required.

Road Construction Updates on the Entire Project:

Go to the website for the Wisconsin Department of Transportation and the I-39/90 Project Team at or follow them on Facebook at

If you are a visitor, click here for more tips for planning your stay.