Shimmy1
Senior Member
What kind of weight formulas are they using? Surely not federal bridge law. That only allows 42,000 on 8' tridem, or 43,500 on 10' spread. Here in ND, we can put 48,000 on any tridem with duals on all wheels, but have to follow federal bridge on overall length. I can't see how you can put more than 60,000 on a tandem truck, and to put 65,000 on 4 axles the truck would have to be 32' long. 74,000, truck would need be 48' long. I think maybe either I'm misunderstanding what you guys are talking about, or these weights are not accurate.