The Causeway is 65 mph, which is silly, because years ago it was only 55 mph. Concrete becomes stronger with age, so any argument made about the bridge strength and vibrations at 70+ mph is horse ****. It sounds far fetched, but I've heard it before.
Yeah I'm with you I'm calling bull on any argument that the speed of motorist will have any lasting effect on any fixed/non-moving bridging.
The only two things most of us are truely at risk for when we speed is getting a ticket anf burning excess fuel.
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