@nprofile1q... Fun story, interstate 15 just south of Las Vegas goes up to a mountain pass and then down again. The 'standard' way they built interstates, the road would soften so much during the summer that trucks breaking on the down side would create huge ripples of asphalt and climbing on the up side would do the same. It was just concrete for a while, but that fractures and becomes gravel/potholes. 1/2