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Are heavy vehicles destroying our bridges?
"This article says:
"... the average vehicle today simply weighs a lot more than it did then. In 1981, the average passenger vehicle weighed about 3,200 pounds. Today, thanks mostly to more SUVs and vans, the average vehicle weighs almost 4,100 pounds."
Surely, the engineers who designed the I-35 bridge in Minneapolis didn't anticipate such a load. Each traversal of a bridge by any vehicle has a microscopic effect proportional to its weight but that gets multiplied by 1 to 2 BILLION crossings over 40 years!"
I changed Tides' wording from vehicles to SUVs & trucks to make sure this new discussion got everyone's attention.