It's a partially open-grid bridge, 180 feet off the water, part of a 4 lane interstate expressway, with no shoulder or walking area except a 12 inch wide steel grid for maintenance workers; too narrow to ride or walk a bike on. There's a 3 foot raised steel grid median between north and southbound, and the outside of the lane is a 4-inch steel curb pipe intended to redirect wayward tires.

Here are a couple of photos



It's 5 miles long and located in the straits of Mackinaw. Winds can get bad enough that the police sometimes reduce the speed limit to 20 MPH or even close it. Even "normally" the speed limit is 45. About 20 years ago the wind caught a car (admittedly, something like a Yugo, and the girl was speeding) and blew it off the bridge.

It's a wonderful bridge, we cross it at least a couple times a year. I rode over it on a motorcycle once, and I stayed on the open gridwork as long as possible, it was quite fun. And I'm all for asserting my rights as a bicyclist. But there's no way I'd ride over that bridge. And there's no way to walk it, either.