The Bayonne Bridge isn't the first large bridge that's had it's height increased.
The Bridge of the Gods on the Columbia River between OR and WA height was raised in the early 1940s.
Yes, the bridge will not be replaced, but from what I can see it will be severely altered and it will lose a significant amount of historic integrity of appearance, design, and materials. I strongly recommend that anyone interested in visiting and photographing this nationally significant historic bridge do so prior to this project taking place.
Novel modification of the bridge apparently is forthcoming. A major project to increase the waterway clearance by about 65'.