Last night on the way back from Sunapee I got stuck in traffic right around 5pm at exit 5 (Bellows Falls). It took about an hour to get to exit 4 (Putney) where I-91 was shut down. I just found out what happened:
http://www.reformer.com/localnews/ci_14307972
http://www.reformer.com/localnews/ci_14307972