Culvert Pipe Quandry

[aczlan]

Honestly, I would fence it first before you dig a trench across the road. Someone will just drive in the trench and you could be held liable for that.

Good point, I would recommend that you fence it (put the fence at least 30' inside your property) and put up least 3 game cameras:
Camera 1: Positioned to catch them going past your no trespassing signs (with you taking some pictures from road level to show that that signs are there)
Camera 2: To catch them possibly destroying your fence
Camera 3 (very well hidden): To watch cameras 1 and 3 in case they try to break and/or steal them

Good luck, sounds like you are bucking a stacked deck.

Aaron Z