This happened in my area about a year ago. The bridge was posted at 6 tons. Its a very rural bridge and I had crossed it a few days before this happened to it, and it almost seemed like the half ton pick up I was in was too heavy for it. And yeah, the concrete truck was loaded with something like 7 yards of concrete.
The wife and I took a road trip last year to Alabama for a wedding for a family friend, and saw this one the FREEWAY, traveled through 2 states with this setup. There was someone in each car, but come on!
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=325744"/>