How much weight can a concrete bridge hold?
How much weight can a concrete 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 is the most unstable bridge?
The Hussaini Hanging Bridge in Pakistan was once so unsteady, it washed away and had to be rebuilt. It's been dubbed the most dangerous bridge in the world.