A 59-year-old man took a digger on a joyride across the famous Seven Mile Bridge in the Florida Keys, dumping boulders on to the road along the way, officials said.
Monroe County Sheriff's spokeswoman Becky Herrin said Carl Blahnik damaged the road and the sides of the bridge while recklessly driving along it for 90 minutes.
She said when Mr Blahnik left the bridge, he hit spikes that deputies had placed on the road. He was taken to hospital for treatment and will face charges.