Ohio State Route 163 is a east-west highway across Central Ottawa County. Portions of this highway runs along the northern banks of the Portage River. OH St Rt 163 passes through the following towns in Ottawa County. Marblehead Port Clinton Lacarne Oak Harbor Genoa OH St Rt 163 is multi-plexed in Ottawa County. Ohio State Route 269, near Lakeside. OH St Rt 163 intersects the following highways in Ottawa County. Ohio State Route 269, near Lakeside. Ohio State Route 269, near Lakeside.