I-39/90 Expansion Project

Illinois state line to Madison, Dane and Rock counties

Reconstruction work to start on I-39/90 south of the US 12/18 (Beltline) interchange, Dane County

Posted: August 15, 2019

Construction work is scheduled for the two-mile section of Interstate 39/90 from County AB to the US 12/18 (Beltline) interchange in Madison.

What you need to know:

  • Temporary widening work will occur this fall on the northbound side of I-39/90, between County AB and the Beltline interchange.
    • 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.
    • The work zone speed limit will be reduced to 60 mph within these limits.
    • This widening work is anticipated to be completed in November.
  • In 2020, crews will reconstruct and expand I-39/90 within these limits as a continuation of the Interstate expansion from the Illinois state line to Madison. Two lanes of travel will be maintained in each direction, separated by a median barrier wall.
    • In March/April, all Interstate traffic will shift onto northbound side, utilizing the temporary widening lanes, so crews can reconstruct and expand the southbound lanes.
    • In July, Interstate traffic will shift onto that new southbound concrete pavement as crews complete expansion work on the northbound Interstate lanes.
      • A three month closure of Siggelkow Road, under I-39/90, is planned for late summer/early fall 2020 for crews to reconstruct the northbound bridge over the roadway.
      • The southbound Interstate bridge over Siggelkow Road was completed in 2014.
  • This section of the I-39/90 project is scheduled to be completed in November 2020.
  • 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 23, and continue through the 2019-2020 construction season.

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