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.

I-43 North-South Corridor - Need/purpose

Purpose and need document

The purpose of this study is to address:

  • Emerging pavement and structural needs
  • Safety issues
  • Design deficiencies, including clearance at bridges, visibility, and merging and weaving distances
  • Existing and projected traffic volumes

This study will evaluate:

  • No build alternative
  • Replacing deteriorating pavement and bridges
  • Reducing congestion and improving safety
  • Providing efficient freeway operations
  • Improving or replacing existing interchanges
  • Potential new interchange at Highland Road
  • Minimizing impacts to natural and built environments

Congestion and crashes

  • I-43 carries 49,000 vehicles per day south of WIS 60 and 85,460 vehicles per day north of Silver Spring Drive.
  • There is regular and significant congestion in the corridor today. Future projections show traffic growing to 65,000 vehicles per day south of WIS 60 and 112,500 vehicles per day just north of Silver Spring Drive by 2040.
  • There were a total of 1,087 crashes over a five year period between 2006 and 2010, including four fatal crashes.

SSI - Project contacts Questions about the content of this page:
I-43 North-South Corridor Project Team, doti43northsouth@dot.wi.gov
Last modified: August 15, 2013

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