I-39/90 Expansion Project

Illinois state line to Madison, Dane and Rock counties

North Segment

Edgerton to Madison

highway2This segment extends 21 miles along I-39/90 from the Dane/Rock County line north to the US 12/18 interchange near Madison. It is one of three segments of the I-39/90 expansion project which will be reconstructed and expanded to six lanes.

Interchanges to be reconstructed include:

  • US 51/WIS 73 – completed in 2015
  • US 51 – completed in 2017
  • County N – completed in 2017
  • US 12/18

The reconstruction will address roadway and capacity deficiencies. Grade separated crossings along the segment are also included in the reconstruction.

The I-39/90 Expansion Project began in 2015 and the mainline project is currently anticipated to be completed in 2021.