the bus was to tall to take on that road, because the bridge only had 10 ft of clearance. an experienced bus driver would know that, and know the height of his bus, and be able to stop before hitting it.
I live in phx, driving around town you see constant holes or repairs sections of block fences along roads. Few months back i came across a guy who somehow managed to drive his car up a concrete barrier. Literally a 45 degree angle on top of a concrete wall seperating a bridge sidewalk from the road.
Every day in the exact same spots we have accidents, and i mean that literally. Same intersections, same time of day. People out here will see a terrible accident caused by someone speeding between lanes, and then do the exact same thing attempting to get through the traffic. Of course a decent amount just cause another accident. Blinkers dont exist in phx, and 4 way stops are a gamble if the guy who pulled up after you started your turn is going to decide to go too or not.