Washington Governor Jay Inslee says work has already started to design detours after apartial bridge collapse in Mount Vernon, Washington, but state Transportation SecretaryLynn Peterson asked people to avoid Interstate 5 in the area for the next severaldays. The National Transportation Safety Board is sending an investigativeteam.
Three people were injured but officials say it appears no one died.
Right now, authorities believe an over sized truck may have hit the bridge.
The National Transportation Safety Board will be on site Friday to investigate the collapse.