At Waldo, US 23 again becomes a freeway. It continues as a freeway throughout most of Marion County, then resumes at-grade crossings with a mix of some freeway-style junctions which are otherwise signalized after the Morral interchange. US 23 runs concurrently with divided SR 15 until it takes a different route at the Carey exit. SR 15 continues on to Findlay and is designed to allow most traffic to bypass the northern stretch of US 23 by offering a fast connection to I-75. US 23 continues north through Carey, Fostoria, and Risingsun.