I-39/90/94 Bridge over Wisconsin River - Columbia County

Project location | Project overview | Schedule | Environmental Documentation | Contact information

Project location

​I-39/90/94 Bridge over Wisconsin River - Columbia County

Project overview

​​The I-39/90/94 bridges over the Wisconsin River were constructed in 1961 and are nearing the end of their operational life and need to be replaced. An Environmental Assessment was completed with a Finding Of No Significant Impacts (FONSI) in June 2​021. WisDOT has reached the final design phase of the project and proposed improvements include:

  • ​​Replacing the existing I-39/90/94 Wisconsin River bridges. One new bridge will be located to the east of the existing bridges and the other will be located at approximately the same location as the existing bridges.
  • Reconstructing approximately 1.4 miles of the eastbound interstate and 1.8 miles of the westbound interstate to accommodate the new Wisconsin River bridge locations.
  • Replacing the County U and County V bridges over I-39/90/94 to accommodate the alignment shift and widening being completed on the interstate below.​
  • Reconstructing approximately 0.4 miles of County U, which will include shifting the alignment to the north to improve roadway geometrics.​​
  • Reconstructing ​​approximately 0.5 miles of County V, which will include shifting the alignment to the south slightly. The alignment shift is being done to allow County V to remain open to a single lane of traffic during the reconstruction timeframe.​​



  • October 2022 to June 2023 - ​​Soil borings ​within Wisconsin River for new bridges
  • January thru November 2023 -  Right of way acquisition
  • November 2023 - Final design completed
  • 2024 thru 2027 - Construction anticipated​​

Past public involvement​

​Environmental documentation

​The approved Environmental Assessment (EA) can be found below: please note, the following documents are very large and may take several minutes to download:​


​Final design

Contact information​

Frank J. Pritzlaff, P.E.
WisDOT Project Manager
(608) 246-3803

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
Email: ​swr.dtsd@dot.wi.gov