Ohio State Route 100



State Route 100 (SR 100) is a north–south highway in northwestern Ohio. Its southern terminus is at State Route 309 near Iberia, and its northern terminus is at State Route 53 in Tiffin.

History

 * 1924 – Original route established. Originally routed from 1 mi north of Brokensword to Tiffin.
 * 1939 - Extended to 12 mi south of Bucyrus along route 19 from 1 mi north of Brokensword to 3 mi south of Bucyrus and an unnumbered road from 3 mi south of Bucyrus to 12 mi south of Bucyrus.