The Mark Twain Bridge on Interstate 72 that leads into Hannibal is shut down after someone called in a bomb threat to dispatchers at the Marion County 911 Center, according to Marion County Sheriff Jimmy Shinn.
Shinn said the call came in at 8:45 p.m. and the caller said there was a bomb on the bridge that would detonate in an hour.
Traffic has been shutdown on the Mark Twain Bridge while investigators from Illinois and Missouri begin a search for a device, which hasn’t been found, according to Sheriff Shinn.
Shinn said MSHP’s Water Patrol is en route so investigators can search the underside of the bridge from the water. Bomb technicians and K-9 crews with the Illinois State Police have also been called in to investigate.
Sheriff Shinn said the bridge could be closed for several hours. Meanwhile, Shinn encouraged drivers to cross at Quincy or Louisiana, Missouri.