No, they are gone. Search the archives. The WC/RC/Krystal’s debate has been the subject of (several) prior threads.
Actually there is one still left operating in Miami at NW 125th Street and US441 – it’s a grungy little operation in a marginal neighborhood but the burgers and birch beer are still the same as i remember back in the 60’s. A few years ago i found a second one in Liberty City/Miami along NW 27th Avenue around 79th Street – not sure if this one is still operating now.