I-43 North-South (Silver Spring Dr. to WIS 60) - Environmental documents

The design process included a re-evaluation of the 2014 Final Environmental Impact Statement and Record of Decision to determine if conditions changed along the corridor. The re-evaluation was approved in April 2020 and can be found below:

Final Environmental Impact Statement and Record of Decision

November 25, 2014

The following documents are very large and may take several minutes to download:

The Federal Highway Administration, in cooperation with WisDOT, has prepared an Environmental Impact Statement (EIS) for proposed improvements in the I-43 corridor in Milwaukee and Ozaukee counties. The EIS presents the need for proposed improvements, the alternatives considered to address the identified needs, and the impacts resulting from the reasonable range of alternatives being considered. A discussion of potential mitigation concepts is also included, as well as a summary of the coordination conducted with the public, interested stakeholders, and review agencies.

The EIS also evaluates adjacent arterial roads in Milwaukee and Ozaukee counties, including Port Washington Road and Jean Nicolet Road, and the following interchanges:

  • Silver Spring Drive
  • Good Hope Road
  • Brown Deer Road/WIS 100
  • County Line Road
  • Mequon Road/WIS 167
  • County C/Pioneer Road
  • WIS 60

Understand WisDOT's structured approach to analyzing impacts of the proposed transportation project and its alternatives by viewing the Impact Analysis Methodology.

The national and Wisconsin environmental policy acts require environmental documentation for projects with potentially significant social, economic, natural resource and other impacts. The Federal Highway Administration (FHWA) is the lead agency for the EIS, which is prepared in accordance with FHWA guidelines.


Steve Hoff, P.E. Project Manager
(262) 548-6718

Dan Sellers, WisDOT SE Region Communications
(262) 548-6702

Wisconsin Department of Transportation (WisDOT)
Southeast Region
141 NW Barstow St.
P.O. Box 798
Waukesha, WI 53187-0798
Phone: (262) 548-5902
Fax: (262) 548-5662
TDD: 711