To anyone coming up Rt. 23 from Columbus - just stay on Rt. 23 and get off at the Carey exit.
Rt. 23 goes right through Carey. In the center of town, turn left onto 568 (at the gas station), & STAY on Rt. 568. It's about 10 miles or so, and the Riverbend Park will be on your left - you'll see the sign & that iron trestle bridge that crosses the creek into the park.
This is the easiest way from Columbus, no turns, no detours. Just Rt. 23 to Rt. 568.
If anyone would like my phone number, please pm me. I only live about 10 minutes from the dogpark. If you get lost locally, we'll get you there.