Single axle weight limits above 20K lbs.

Make sure the axle weight and tires allow more than 20k on the axle. Otherwise it doesn't matter what the state weight limit is.

 

I dunno anything about it first I’m seein it @MACK E-6 but while we’re cracking eggs of knowledge maybe you can break one on me. Some of those states have stuff listed about an “NN route”. What’s an NN route?

 

National Network route
National Network - Wikipedia

In a nutshell, truck routes.

 

Oh. Well that makes sense. Is that the same as the STAA routes in the Rand McNally atlas?

 

I want to say yes. Maybe someone who knows better can answer.

 

Because if the mechanical rating is 20k, that's the weight rating max. Doesn't matter if the state allows 50k, if the equipment isn't rated for it.
The max weight per axle has always been which is lesser.
1. State regulated rating.
2. Axle weight rating.
3. Tire weight rating.

 

I am not 100% sure. However, in common parlance, STAA means doubles. The way I understand it doubles is allowed on all of the National Network roads PLUS up to one mile away from one in the case of a double. This is why you will see many "drop yards" very close to roads in the National Network.

In all honesty, I have no idea what the "legal" difference between NN and STAA is and honestly don't care. I just have always thought of STAA as doubles.

 

Nope. It plainly specifies registered gross weight not actual gross weight. And based on the horror stories I hear about your Maryland DOT, I don't believe I'd be risking that one.