Don't let it bounce!
We passed under an overpass going into Phillipsburg, MT that indicated 12'-6", and we are 12'-9" high including sacrificial antennas. Fortunately the road sloped enough from left to right that we could safely pass below the overpass by moving to the left in the lanes.
I also woke up in the middle of night thinking about driving under the overpass going in the Missoula, MT the next morning, and was relieved that the indicated height was actually 13'-0" (as I remember). There are videos of many vehicles failing that IQ test.