I always thought this was only a remote possibility - easier to wind the lottery - but I guess it can and obviously has happened:
http://www.cbc.ca/news/canada/montreal/northbound-lafontaine-tunnel-won-t-fully-reopen-until-friday-morning-minister-says-1.3197555
Jay
2002 Bambi 19' - the "Toaster"
2009 Nissan Pathfinder - the "Buggy"