So on one side of the road I have permission to trap from that owner and the other side I don't and the bridge is in the middle being the bridge is in the middle is that considered state property being it's a state owned bridge? And can I legally set under it even on the edge of it on the other side being the state owns the bridge and 15 feet from the center of the road? I can't find anything that says I can't in the regs.

My best answer is contact an older state game warden who knows the laws. Every state is somewhat different. Here in Ohio the property owner owns ,, pays taxes to the center line of the road. Bridge or no bridge. The state owns the water but not the land under the water. Property owner does. On our farm the north line was the center line of a river. Sounds goofy but through out the years due to floods and such we lost and gained some tiny piece of land.

Totally changes depending on what state your in. I have no idea what New York laws are, but in my home state of Michigan it is illegal to trap/hunt/forage in the road right-of-way unless the land is public or you have the ok of the landowner. Iowa, on the other hand, allows trapping in road right-of-ways with some restrictions. Skippy's advice is the best answer.

Ai Google says right of way trapping not legal in NY.

Maybe On X or your state wildlife agency has ownershop maps,, plus many places one may own to the middle of the creek road or top of the mountain however there may be a public easment

Set on the side of the bridge you have permission.

I set conibears in coon trails where they cross roads. I set after dark and pick them up before daylight. Nobody even knows Im trapping.

Everyone pays taxes on all roads

Asking the vary specific question concerning DOT state bridges, trapping permission on one side of the bridge and not on the other in New York state; AI provided several statute references to: landowner property rights and boundaries, water right-of-way, trapping regs including anchoring of traps.

In summary:
"To stay compliant with the NYSDEC Trapping Regulations, you must ensure your traps are strictly set on the side of the bridge belonging to the landowner who granted permission, and that no part of your equipment encroaches upon the restricted property." ( from AI )

A public easment in Michigan is only for travel, not to hunt, trap, or pick asparagus in the ditch. Sounds like N.Y. is the same.