Citing general concerns of a possible terrorist attack, the Mackinac Bridge Authority voted Tuesday to restrict traffic on the bridge this year during its annual walk on Labor Day.
Walkers, emergency vehicles and shuttle buses will be allowed on the bridge during the event, in its 60th year. The bridge will be closed to other vehicle traffic from 6:30 a.m. to noon during the walk Sept. 4. The event begins at 7 a.m.
Michigan State Police and the U.S. Department of Homeland Security recommended the authority close the bridge to traffic due to recent terrorist-related attacks, including those in Europe and at Ohio State University in 2016, said Capt. Chris Kelenske, commander of the Michigan State Police, Emergency Management and Homeland Security Division.
There are no known threats to the annual walk, he said.