Many of the city’s new bus shelters, part of the street furniture franchise that has also brought new newsstands and a few bike shelters and pay toilets to the city, are doing better than one might have expected. They don’t seem to have been victimized by as much widespread vandalism as one might expect to find on sleek, new glass structures. On the other hand, some have not been holding up so well. Some, for instance, have been totally trashed. This one on Vanderbilt Avenue in Fort Greene is in the mild to medium range.