Normally, when a wheel bearing goes it’s only at one side of the cars; especially at your km-age. Try when the noise at it’s highest to turn to one side at a time, if the noise is getting worse turning, say, to the right it's the left hand side that's gone, or vice versa.
I think it’s unusual for a bearing to go at your cars age and Km, but dirt can have at some time entered into the grease or the seal is leaking causing the grease to disappear. My ’96 have done 133k km and, to the best of my knowledge, is on the original bearing all around.
Good luck finding the cause