I just put up a page at Squidoo.com about the Mackinac Bridge. In case you didn't know, this year marks the 50th anniversary of the completion and opening of the bridge. Numerous events are being held this year in honor of the Mackinac Bridge's 50th and there is some pretty neat stuff at the page I created. At the new page you can view a current picture of the bridge and see what the current bridge conditions are for crossing the Mighty Mac. Information about how much tolls cost, great pictures of the bridge, odd facts, and 8mm footage of the old car ferry service that was rendered obsolete when the bridge opened on November 1, 1957.
You will also find links to other great resources on the web that are all about the famous Mackinac Bridge.
I think it is pretty neat. Hope you do, too. Check it out.