92,000 is typical for interstate travel, but intrastate varies by state.
"Inner-Bridge" refers to the following: For the Interstate Highway System, inner-bridge legal weight limits are established. There is a weight limit for the truck tractor portion of the truck tractor/semi-trailer combination and a weight limit for the latter part of the combination. The extreme axle distances for each of the two portions are both designated as inner-bridge limits. The inner-bridge for the truck tractor portion is the distance from the center of the steering axle to the center of the last truck tractor axle. The inner-bridge for the latter portion is the distance from the center of the rear axle of the tractor or the center of the first axle of the rear axle group of the tractor to the center of the last axle of the trailer.
For a typical five axle tractor-trailer unit making interstate runs, 80,000 lbs. without requiring a permit.
Average weight of a road tractor and 53' dry van trailer is around 38,000 lbs. The Loaded weight is 80,000 lbs which is the legal maximum weight for a standard 5 axle tractor trailer.
They vary, but I think the avg woube about 19,000lbs.
If you have a sliding fifth wheel, you can transfer weight from the drive axles to the steer axle by sliding it forward, or you can transfer weight from the steer axle to the drive axles by sliding it back. If you have sliding tandems on your trailer, you can transfer weight from the drive axles to the trailer axles by sliding the trailer axles forward, or you can transfer weight from the trailer axles to the drive axles by sliding the tandem axles back. If you don't have these options, you have to readjust your load.
Five
In the UK, the maximum axle weight for a trailer axle on a 6 axle trailer is 8500 kg. In addition it must have road friendly suspension. With a 5 axle vehicle the maximum axle weight is 11.5 tonnes.
It depends on the commercial vehicle, how it's licensed, the state it's running in, and a lot of other things, but a tractor-trailer combination with tandem axles on the tractor and the trailer can generally carry 80,000 pounds--12,000 on the front axle and 34,000 on the tractor and trailer tandems.
A ten foot spread axle trailer is allowed 20,000 lbs. per axle, for a total of 40,000 lbs.
Yes
Your tractor drive tandems could weigh in at 34,000 lbs, but you could only have 20,000 lbs. on the single axle of the trailer.
An 18 wheeler consists of a tractor (meaning something that pulls) and a trailer (meaning something that follows.) A semi tractor-trailer rig has a trailer that sits on top of the frame of the tractor on a coupling device called a "fifth wheel." The tractor has ten wheels with two on the front axle and four on each drive axle in the rear. The trailer has two axles with 4 wheels each. The tractor and trailer together are informally called a rig. Is that what you were after?