I know the exact spot you are talking about, and I have heard some stories of him giving other people trouble, even before the flood.
Technically he probably can't close the road himself because it's a public easement, but at the same time, you are on his property so you gotta at least be respectful of his wishes. I would have driven around to the other side and gone the other direction
1984 Toyota Longbed 4x4 -lifted, locked and incapable of highway speeds... gone, but not forgotten
1985 FJ60 - OME, 33's rust and dents
1999 Grocery Getter SR5 - V6, 5-speed, elocker, SS 1.2, 4.88 gears