The STH 54 Compact Roundabouts and Resurfacing project delivered the first and second compact roundabouts on the state highway system in Wisconsin, offering a cost-effective solution that balanced safety improvements with the challenges of a constrained environment. Led by the Wisconsin Department of Transportation, the $6.1 million project reduced crashes, eased congestion, and minimized disruption to nearby businesses.

A raised median improved safety by restricting left turns, while the roundabouts enabled U-turns to maintain business access. The design also enhanced pedestrian and bicycle accommodations and lowered long-term operational costs compared to traffic signals.

Compact roundabouts offered significant savings: while traditional roundabouts typically cost $2–2.5 million each, these were constructed for about $700,000 apiece—reducing construction expenses, right-of-way needs, and contaminated soil mitigation. At the WIS 55 intersection, they delivered the same safety and operational benefits at a lower cost and with reduced maintenance requirements.