I-39 bridges, Madison - Dane County

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

Project location

I-39 bridges (County BB/Cottage Grove Road and Hanson Road), Madison - Dane County

Project overview

The purpose of this project is to preserve and improve the structural deficiencies and functionality of two bridges over I-39. The projects consist of several spot improvements on both bridges including concrete surface repairs, bridge railing maintenance, spot sidewalk replacements, joint sealing and protective surface treatment.

Schedule

  • February 27, 2025 - Local Officials and Public Involvement Meeting
    5:00 p.m. to 6:00 p.m.
    WisDOT Southwest Region Office
    2101 Wright Street, Madison
  • 2028 - Construction anticipated

Traffic impacts/detours

I-39 will remain open to traffic for the duration of construction. During bridge work, Hanson Road and Cottage Grove Road/County BB will be detoured.

  • Cottage Grove Road/County BB detour:
    • County N, I-94, WIS 30 and US 51
  • Hanson Road detour:
    • Portage Road, Hoepker Road and US 51.

Status/phase

Design

Contact information

Amy Coughlin, P.E.
WisDOT Project Manager
(608) 245-5358
amy.coughlin@dot.wi.gov

Hannah Punzel
WisDOT Southwest Region Communications Manager
(608) 246-7907
hannah.punzel@dot.wi.gov

Wisconsin Department of Transportation (WisDOT)
Southwest Region, Madison Office
2101 Wright Street
Madison, WI 53704
Phone: (608) 246-3800
TTY: 711
Email: swr.dtsd@dot.wi.gov