The historic Beaver Bridge in Beaver, Ark., is rated to allow vehicles as heavy as 10 tons to cross the White River at Table Rock Lake. A video that went viral last week shows a bus that weighs more than 35 tons crossing the bridge. Do the math, and you'll understand why this was a problem.The video pasted up above shows the bridge visibly sagging under the bus' weight as onlookers watch in disbelief and other motorists honk at the bus driver. Officials from the Arkansas Department of Transportation closed down the bridge after seeing the video to check for damage, and, according KATV in Little Rock, reopened it October 18th.