
Since the turn of the 2000s, roundabouts have been a growing phenomenon on Wisconsin highways. According to the Wisconsin Department of Transportation, 350 roundabouts have been built in the state through 2015.
WisDOT officials say the intersections make traffic safer and more efficient, largely because they reduce the severity of crashes while allowing drivers to yield rather than fully stopping at a stop sign or red traffic light. Opponents, namely Republican state lawmakers, say they harm businesses that rely on trailers to transport goods.
Legislators have regularly put forward bills since at least 2011 that would require WisDOT to get a municipality’s permission before building a new roundabout. So far, none have been signed into law.
Below is an interactive map with all 350 roundabouts that have been built through 2015. Clicking on the icons shows more information about each project.

Wisconsin Roundabouts News
- Evers budget to include proposals to curb reckless driving
- Traffic roundabouts may frustrate drivers, but they save lives, greatly reduce injuries from crashes
- WisDOT grant to help build $2.5M roundabout in Outagamie County
- High court sides with property owner in dispute over assessment from roundabout
- MnDOT study: Roundabouts significantly reduce fatal accidents
- State adds nearly 30 roundabouts as lawmakers renew call for limits
- Roundabouts grab most attention at listening sessions, Facebook page
- Circling back: Transportation officials again looking to traffic circles
- Roundabout construction takes dip in 2015
- I-39/90 interchange rebuild to include 3 new roundabouts








