How to get out of an overweight ticket?

About 2 weeks ago I got an overweight ticket along with about 10 other drivers. We were hauling sand out of a pit about 30 miles away and had to travel 4 miles of blacktop to get to the pit. Everything else was main highways. Well the road we were on was a 73280 road and I had on 79500 so I got a 6200lb overweight ticket of around $1200. Everyone else was about the same overweight also. They didnt actualy run us over the portables on the road we were illegal on, but a few miles down the road on the main highway. The court date is comming up in a few weeks and is there any use trying to fight it? There are probably 100+ trucks that run out of this pit everyday, and everyone of them have been, and still are running 80K. I have still been running 80K, but have been taking pit roads a different direction back to a main highway which is about 5miles out of the way and all gravel roads. What do you guys think about fighting the ticket? What about taking a chance running on the blacktop road again?

 

I am an owner operator so it's my ticket. I can't believe that the mine company dont have something worked out with the township to allow trucks to leave the pit with 80K. Is it the townships/countys decision on the weight limit of the road, or the states decision? The roads around here are not actualy posted with signs. I thought I heard one time about having a couple miles cushion on a non-desginated road to be able to get in/out of a place like this.