FAIRHAVEN — Thousands of motorists travel over the New Bedford-Fairhaven Bridge every day, but did you know there is a bit of a mystery regarding the granite pedestals on the Fairhaven side of the bridge? If you look at the pedestals, also called plinths, clearly they have an inlay and drill holes, making it evident that a plaque used to be affixed to it. But what happened to the plaque? And what was written on it? Some on social media theorized it was stolen by vandals. Others thought it was taken down to be cleaned and never put back. “I have vague memories of bronze plaques. They've been gone for decades,” posted Dave Despres.