For more information, contact: Steven Theisen, WisDOT Communications Manager, (608) 884-1230,

Crews will resume work next week to reconfigure the I-39/90 and US 12/18 (Beltline) interchange in Madison. This year, crews will finish the new I-39/90 configuration through the core of the Beltline interchange. This includes a right exit lane for I-39/90 northbound to US 12/18 westbound – eliminating the current left exit – as well as dual lane exit for I-39/90 southbound to US 12/18 westbound.

During the construction project, I-39/90 will remain open to two lanes each way during daytime hours and weekends. Nightly single lane closures will occur between 8 p.m. and 5 a.m. Monday through Friday and 10 p.m. to 7 a.m. Friday nights. Periodic nighttime ramp closures from 9 p.m. to 5 a.m. Monday through Friday.

The following long-term ramp closures are anticipated at the Beltline interchange:

  • US 12/18 westbound ramp to I-39/90 northbound will be closed for one month from mid-April to mid-May.
  • I-39/90 southbound loop ramp to US 12/18 eastbound will be closed for two months in August and September.
  • US 12/18 westbound loop ramp to the southbound Interstate will be closed for three months starting in August.
  • I-39/90 northbound ramp to US 12/18 eastbound will be closed for one month in August.

Motorists must use alternate routes such as the signed detour using the Beltline and US 51/Stoughton Road interchange.

Single lane closures are also anticipated on US 12/18 westbound and eastbound near the Beltline interchange.

When the Beltline interchange construction is complete in November 2021, I-39/90 will feature three southbound lanes through this interchange with dedicated off-ramp lanes to the Madison Beltline. Three northbound lanes will be constructed before and after the interchange, with accommodations for a potential third lane through the interchange core. View the Beltline interchange configuration at

All lane restrictions, ramp closures and work operations are weather dependent and subject to change. Motorists are reminded to plan ahead; obey the posted speed limit; watch the road ahead and eliminate distractions; and drive with caution in all work zones.

The public is encouraged to stay informed and register for project email updates on the website,, and follow the project Facebook page,

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