UPDATE: The Mackinac Bridge connecting Michigan's Upper and Lower peninsulas has reopened to traffic after being shut down due to falling ice.
The Mackinac Bridge Authority says Wednesday's shutdown lasted for a few hours and came as a precaution after ice came off cables and towers of the bridge.
The bridge has been shut down several times this year due to weather.
Updates about conditions at the bridge are posted online.
The 5-mile bridge goes across the Straits of Mackinac between lakes Michigan and Huron.
The shutdown came amid wintry weather in Michigan, including cold temperatures and recent snowfall at the bridge.
