The General Turnpike Act WAS signed in 1817...
Perhaps it dates back to when the road was originally established.
1817 is the date given by the National Bridge Inventory.
This bridge is a natural rock formation with some extra support stones on the edge of the top span. Not sure where the date of construction is listed as 1817, I would like to know where this was found. I live within about 1/2 mile of this natural bridge which has a sign saying such. It is a landmark of the county and visited by many over the years and continuing visitors as of this date.
Certainly a little more subtle than New River Gorge
www17.connect.my.nyit.tssiafs.roinuj.nevetss.nyc.311-0611housing.3br.4br.$6,598,000.00.000,995,60000707710035-10010-OWNER/OCCUPATO