“The tunnel’s going to be closed for quite a while.” That’s what we just heard on the scanner, as police call in the major-incident investigators for a crash on northbound Highway 99 at the Battery Street Tunnel. We don’t have details of the crash, but in case you drive the Alaskan Way Viaduct northbound overnight, you should be aware. (“Quite a while” translates to “at least two hours,” according to more scanner traffic heard as we wrote this.) FRIDAY AFTERNOON UPDATE: SPD Blotter has the story of what happened – motorcycle crash with two people hurt.