US 18 (County Y to Gruennert Street) & (Helenville Road – west limit of the Village of Sullivan)

Project location | Project overview | Schedule | Traffic impacts/detours | Status/phase | Contact information

Project location

US 18 (County Y to Gruennert Street) & (Helenville Road – west limit of the Village of Sullivan), Jefferson - Wales, Jefferson County

View US 18 project in a larger map.

Project overview

The project will address 9.4 miles of deteriorating pavement on US 18 from approximately 1,400 feet east of County Y to Gruennert street and from Helenville Road to the west limit of the Village of Sullivan in Jefferson County. This project will remove and replace the asphalt pavement. Additional improvements will include:

  • Installation of centerline rumble strips
  • Installation of asphalt safety edge on the outside shoulders
  • Installation of gravel shoulders to match the final roadway elevation
  • Installation of permanent signs and pavement marking
  • Upgrades to beam guard to meet current standards


  • Summer 2019 - Construction anticipated

Traffic impacts/detours

US 18 will be open to traffic during construction. Construction will take place during the day under a lane closure with a flagging operation. 



Contact information

US 18 (County Y to Gruennert Street)
Matthew Dapp, WisDOT Project Manager
(608) 246-5353

US 18 (Helenville Road – west limit of the Village of Sullivan)
Jeremy M. Hall, P.E., WisDOT Project Manager
(608) 245-2655

Michael Bie, WisDOT Southwest Region Communications Manager
(608) 246-7928

Wisconsin Department of Transportation (WisDOT)
Southwest Region, Madison Office
2101 Wright Street
Madison, WI 53704
Phone: (608) 246-3800
Fax: (608) 246-3843
TTY: 711