May be a crazy suggestion, but you could get a decent size piece of wood, and then cut it to give you a make shift ramp, enough to raise your drivers side to get over the hump. Hard to tell without seeing it.
It is the worst sound in the world though
As I've said in previous posts I used to have the problem on farm roads at my mother-in-laws. One day I actually took a shovel with me to remove a hump out the road that the gas board had kindly left there