Here’s what a fastener manufacturer has to say about the problem affecting the Bay Bridge (the failed rods are ASTM A354 grade BD steel). For decades, it was common knowledge that galvanizing high-strength steel rods was a bad idea. Caltrans disagreed until about 10 years ago. They’ve always been set in their ways, and they’ve always imposed their ways (more specifically, their specifications) on the design teams working for them. They finally banned the use of galvanized A354 Gr. BD rods, but exempted the Bay Bridge from the change because it was supposedly too late in the design process.
For us engineers who don’t do Caltrans work, A354 is basically A490 with fewer testing requirements. Don’t ask for galvanized A490, either.