Dave, I don't know the details but apparently the guys who bought 800 cell phones at Walmarts recently in the upper Midwest intended to blow up the bridge. Fortunately, an alert clerk called the police and the guys were arrested over this past weekend.
I posted this anyway, Dave, for those who don't know the story.
Judy
http://spaces.msn.com/bamatravelers/
http://bamatravelers.blogspot.com
Traveling with Glen and Greta in our 2004 Dodge dually and Montana 3380 RL