US 12 Freeway Conversion Study

Project location | Project overview | Schedule | Status/phase | Contact information

Project location

Map of US 12, WIS 19

US 12, WIS 19 (town of Springfield) to Parmenter St. (just north of Middleton), in Dane County.

Project overview

  • This 6.1 mile corridor of US 12 is part of Wisconsin’s National Highway System (NHS).
  • This corridor provides a parallel route from the Madison metro area to I-39/90/94 and to the major tourism destination areas in the state and region and to Wisconsin Dells.
  • Study will help increase highway functionality and safety along corridor.
  • Existing expressway was finished in 2005. Dane County’s North Mendota Parkway Study intends to tie into US 12 for the western termini.
  • View larger project location map.


For more information on Public Involvement Meetings (PIM), hearings and other public activities, visit Public involvement.


Nothing scheduled


June 4, 2015 - PIM

April 29, 2015 - Local officials meeting

2015 - Draft Environmental documentation completed

2013 - Environmental documentation completed

2010 - Value Engineering Study conducted

2008-2010 - Data gathering/preliminary alternative development



Study with no construction activity.

Contact informationUS-12 Freeway Conversion Study

Tom Koprowski
WisDOT Project Manager
(608) 246-3869

Mark Westerveld, P.E.
WisDOT Study Engineer Lead
(608) 246-5355

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

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