Wisconsin Department of Transportation

Alert: The following services will be unavailable on Saturday, January 5, 2013 from 12 a.m. (midnight) to 6 a.m. CST due to system maintenance.

US 51/County U/County K/Business 51 Interchange
Wausau, Marathon County

Wisconsin 511 travel information
View NC, US 51/County U/County K/Business 51 Interchange project maps.
Map key - Thick orange line is the project overview/location. Blue tear drop with dot in center is the project limit.

Project location

  • US 51, Bridge St. to Decator Dr., Wausau, Marathon County.
  • Northbound and southbound ramp terminals at US 51/County U/County K/Business 51.
  • County K, N. 20th Ave. to Campus Dr.
  • County U, N. 20th Ave. to Badger Ave.
  • Overlook Dr., County U to County K.

Project overview

Project improvements for 2014 include:

  • Repaving US 51 (West Wausau Avenue to Decator Drive).
  • Replacing the US 51 bridge decks over County K/Business 51 and southbound US 51 over Decator Drive.
  • Reconstructing the US 51/County U/K/Business 51 interchange as a single diamond interchange at County K/Business 51, with a half diamond interchange at County U. Roundabouts will be constructed at the County K/Business 51 interchange ramps.
  • Constructing a multi-use path beginning at the cul-de-sac at 14th Street, through North central Technical College's property, and ending at the College Drive/Business 51 intersection.

Work completed in 2013:

  • Reconstruction of the County U bridge over US 51.
  • Reconstruction of County U (Westwood Drive to Business 51) to a four-lane urban roadway.
  • Installation of traffic signals at the County U/College Drive/Business 51 intersection.
  • Reconstruction of Overlook Drive (County U to County K).

US 51 serves multiple communities and is a regional backbone highway providing a primary north-south roadway in Wisconsin for a wide variety of industries including manufacturing, wholesale, retail, and service businesses.

Promote your business during construction

Come In We're Open sign

Is your business located within mile of the WisDOT construction zone for this project? If so, help your business not only survive, but thrive, during the construction project. Promote your business by uploading your business information to our business listing website.


  • Reconstruction began April 1, 2013, and is expected for completion in late November 2014
  • Design work started in 2008
  • Planning started in 2004

Questions about the content of this page, contact:
WisDOT North Central Region Office, ncr.dtsd@dot.wi.gov
Last modified: August 6, 2014

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