Mackinac Bridge Authority Employee Talks About Driving Fearful Motorists Across the Span chats up a Mackinac Bridge Authority employee whose job is to drive anxious or fearful travelers across the bridge. The report adds that, “About 100,000 people cross the Mackinac Bridge every month, but according to the Mackinac Bridge Authority, about five people a day need to be driven across by one of [the authority’s employees].”