6 Answers

There is always a reason for something...

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One is only allowed so much for a pay load due to asphalt damage. You have to pay fines and feea and what's all to cover maintenance. I learned this from a trucker friend.....

Almost all states limit the weight of a big truck to 80,000 lbs with no permits. Michigan and I think a couple other go by axle weight. That's why when you go to Michigan you will see trucks with 10 or more axles. I think it is 20,000 per axle. I know in our plant we have been having heavy hall steel Haller's come in in the last couple years. Their theory is its cheaper to buy the heavy permit that to put another truck on the road. 

....safety & $$$$

There was never anybody there at the weigh stations in Michigan, so they phased them out.