 Highway 225 began in the unincorporated town of Ponsford, at an intersection with County State-Aid Highway 26 (CSAH 26) and County Road 129 (CR 129).It passed by the Carsonville Township town and fire hall before leaving the settlement and traveling amongst farm fields.The roadway curved to the south for a half mile before curving back east, following a section line; the roadway would thenceforth follow section lines for the remainder of its length.