Nelson County Unveils Bold 2040 Plan: Largest Roundabout in Kentucky to Feature Brand-New Jail in the Middle In a move local officials are calling “efficient” and “visionary” (and most drivers are calling “what in the hell?”), Nelson County announced plans to construct the largest roundabout in Kentucky by 2040, complete with a state-of-the-art jail at its very center. The plan comes after years of debate over whether the county needs a new jail. Magistrate Keith Metcalf, long opposed to the ide