Being a civil engineer, I figured I should get a couple pics up of the Mackinac Bridge in MI that I took a couple years ago.  My fiance likes to tease me that I have more pictures of bridges than I do of her (not true!)

A view from the top of the northern tower, looking down at the tower's shadow on the bridge deck.

Looking up toward the northern tower from the northern anchor pier.

Looking toward the southern tower from the northern tower as an ore freighter passes below.