


The TPC is a public/private commission that includes the Governor, five state senators, five assembly representatives and three citizen members who review, approve, and make recommendations regarding Major Highway Projects in Wisconsin. State law prohibits the TPC from recommending major highway projects unless funding is sufficient to begin construction within six years. To move forward, candidate projects must undergo an environmental review process. Major Highway Project candidates undergo an extensive, statutorily-set evaluation that considers a project’s potential to enhance economic development, relieve traffic congestion, improve safety and achieve community objectives while minimizing environmental impacts. The counties surrounding this segment, including Dane, Sauk and Columbia, represent 20 percent of the state’s overall tourist spending. It not only serves as a corridor for destinations throughout the state, it provides direct access to attractions such as the Wisconsin Dells, which alone was responsible for $1.6 billion in spending in 2019. The route is also critical to the state’s $21.6 billion (2018$) tourism economy.

It is the longest corridor in the country where three interstate highways run together and is responsible for carrying about 13,800 trucks per day and more than $116 billion (2017$) of freight annually, including: Resuming the study will allow the department to evaluate this corridor and identify improvements to address growing traffic, particularly freight. The I-39/90/94 project from Madison to Wisconsin Dells in Columbia and Dane County is returning to study.

Votes to study I-39/90/94 corridor between Madison and Wisconsin Dells
