Ohio State Route 590 is one of the two north-south highways in Central Ottawa County. This runs from Ohio State Route 2, near the Ottawa National Wildlife Refuge, south to Sandusky County. OH St Rt 590 does not pass through any towns in Ottawa County. OH St Rt 590 is not multi-plexed in Ottawa County. OH St Rt 590 intersects the following highways in Ottawa County. Ohio State Route 2, near Rocky Ridge. Ohio State Route 163, near Rocky Ridge. Ohio State Route 105, near Elmore.
