I-39/90 Expansion Project

Illinois state line to Madison, Dane and Rock counties

Reconstruction begins for I-39/90 and I-43/WIS 81 interchange area, Beloit

Posted: August 22, 2019

Phase one of reconstruction and expansion work along I-39/90 and I-43 in Beloit is scheduled to be completed in November, and crews will start transitioning to phase two reconstruction activities next week. Activities for phase one include I-39/90 lane expansion from the Illinois state line to Cranston Road. Work also includes I-43 lane reconstruction in preparation for the new interchange configuration.

What you need to know:

  • Phase two focuses on the core of the I-39/90 and I-43/WIS 81 interchange and will take two years to complete. Reconstruction taking place during phase two includes:
    • Work this fall on I-39/90 and I-43 to construct crossovers and temporary widening for traffic use in 2020. Crews will also construct temporary ramp connections for use in 2020 to transition motorists between the two Interstates.
      • During daytime hours and weekends, I-39/90 remains open to two lanes of traffic in each direction.
      • Nightly single lane closures are expected weeknights on I-39/90 in this area, and periodic overnight ramp closures at the I-39/90 and I-43/WIS 81 interchange.
    • Starting in spring 2020 through spring 2021, I-39/90 and I-43 interchange traffic will be maintained using the temporary ramp configuration.
      • I-43 traffic will be located on the future WIS 81 alignment near the Millington Road/Gateway Blvd. intersection. Access to Beloit is maintained. Crews will construct the large flyover ramps for direct connection between I-39/90 and I-43.
      • All I-39/90 traffic will shift to the existing southbound lanes, between Hart Road and Cranston Road. All interchange ramps will be maintained and open to traffic.
    • In summer 2021 to fall 2021, I-39/90 traffic will begin using portions of newly reconstructed lanes and the flyover ramps.
      • I-43 traffic will also begin using the flyover ramps. Access to Beloit is maintained via WIS 81 alignment near Millington Road/Gateway Blvd. intersection, and through the new Diverging Diamond Interchange (DDI).
      • All WIS 81 traffic, within the city of Beloit, will be shifted over to one side of the roadway, between Branigan Road and Freeman Parkway, to accommodate construction of the other side.
      • There will be short-term closures of interchange ramps and WIS 81 to convert all traffic to the new interchange configurations. Dates and timeframes will be provided in advance of the closures.
      • Access change for I-43 traffic to WIS 81/Milwaukee Road is anticipated to start in early fall 2021, as shown in the I-39/90 and I-43 interchange navigation map.
  • This section of the I-39/90 project is scheduled to be completed in November 2021.
  • All lane restrictions, ramp closures and work operations are weather dependent and subject to change.
  • Remember to be alert for crews and equipment in this area, and drive with caution through all work zones.

Electronic weekly construction updates for this project will start Friday, August 30, and continue through the 2019-2021 construction season.

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