This is the private put-in for the livery. There's a sign posted on the east bank with that notice by the wooden stairs leading up from the river.
If you want to put in here, do it from the west side north of the bridge. You'll have to portage across the railroad tracks and slide your boat down the bank to the river.
After unloading, you can park at the Clinton trailhead to the Ohio-Eire Towpath Trail off North St east of this location where there's also Porta-potties here.