Jefferson County Announces Roundabout Every Quarter Mile on I-90 Between Butte and Bozeman

A transportation concept making the rounds this week has sparked conversation across the region, as Jefferson County is reportedly exploring the installation of roundabouts at quarter-mile intervals along Interstate 90 between Butte and Bozeman.

The proposal, described as part of a broader “continuous flow safety corridor” initiative, would replace traditional highway stretches with a series of closely spaced roundabouts designed to regulate speed and improve traffic awareness.

According to preliminary descriptions, the concept aims to address concerns related to high-speed travel, winter driv...