We wanted to avoid cars bottoming out entering/exiting our driveway and wanted this to bridge for a reasonable cost. Given smaller than those sold as bridges, we had to put a 1x4 wood under and then it worked. This also gives us a way to bolt them while avoiding issues with the city.FYI: they had a strong rubber odor when indoors (including pkging) and the bright yellow faded in 7-10 daysDurability OK at 2 weeks and TBD longer term