How do you calculate bridge law?

How do you calculate bridge law?

Federal Bridge Formula Calculator | Bridge Law Formula

1. W = the maximum weight in pounds that can be carried on a group of two or more axles to the nearest 500 pounds (230 kg).
2. L = spacing in feet between the outer axles of any two or more consecutive axles.
3. N = number of axles being considered.

How do you calculate bridge weight limit?

Congress enacted the Bridge Formula in 1975 to limit the weight-to-length ratio of a vehicle crossing a bridge. This is accomplished either by spreading weight over additional axles or by increasing the distance between axles.

What is the bridge formula CDL?

The bridge formula is: W = 500 ((LN/(N-1)) + 12N + 36). W = the overall gross weight of any two or more consecutive axles to the nearest 500 lbs. L = the distance (in feet) between the outer axles in a group of two or more axles.

Does Utah have a bridge law?

All axles in a group must be duals or super singles to be allowed maximum weight. Not to exceed 10,000 pounds per axle. The axle, groups of axles, and GVW do not exceed the Utah Bridge Table. The combination unit will conform to the Utah Bridge Table B Extended and the legal axle and gross vehicle weight limits.

What is the bridge law for Texas?

The Federal gross weight limit on the Interstate System is 80,000 pounds unless the Bridge fQrmula dictates a lower weight limit. Federal single-axle weight limit on the Interstate System is 20,000 rxJunds. apart but not mOfe Ihan 96 inches apart.

How much weight can a truss bridge hold?

Arch bridge number one held 21.5 pounds. The second arch bridge held 21 pounds so the average weight held by the arch bridges was 21.25 pounds. Truss bridge number one held 24 pounds. The second truss bridge held 23 pounds so the average weight held by the truss bridges was 23.5 pounds.

How much weight does a bridge hold?

The Federal-Aid Highway Act Amendments of 1974 established the bridge formula as law, along with the gross weight limit of 80,000 pounds (36,000 kg). Current applications of the formula allow for up to 7 axles and 86 feet or more length between axle sets, and a maximum load of 105,500 lbs.

What states have a bridge law?

Bridge Laws By State 2021