Construction starts: April 15, 2026

Anticipated completion: July 31, 2026

Traffic impacts

I-39 will remain open to traffic with continuous single lane closures Monday through Thursday

I-39 will have double nighttime lane closures

County V interchange ramp closures will take place intermittently throughout the project, motorists are encouraged to utilize WIS 19 and WIS 60 during these closures

Weekly update

Current Construction Operations (Week of 5/10/2026):

• Nightly double lane closures will occur on I 39 NB and SB between County V and the Dane County Line 7 days a week from Sunday night to Saturday night. Lanes will be reduced from 3 lanes to 2 lanes in each direction continuously from Sunday evening to Thursday morning. Work includes saw cutting & concrete pavement patching.

Upcoming Construction Operations (Week of 5/17/2026):

• Nightly lane closures will occur on I 39 NB and SB between County V and the Dane County Line from Sunday night to Friday morning.
  • Ramps on I-39 to/from County V may be closed during this overnight period to facilitate this work. A max of 1 ramp may be closed at any given time. Detours will be provided with advance warning of ramp closures to guide motorists.
• All work will be suspended for the Memorial Day weekend starting Friday 5/22 at noon to Tuesday 5/26 at 6AM.