Very nice Erik. Here, east of the big muddy, we often see remnants of older bridges aside of newer and larger ones. Many times all that remains of the older bridge is the stone bridge piers in the body of water (if it's not navigable).
Interesting sidelight, when Newark Bay was dredged thirty years or so ago to make it more accessible for larger vessels, they did underwater demolition to get rid of the footings/ middle piers from the old Jersey Central draw bridge (which was actually twin lift bridge spans).
Kewl stuff and a sweet bridge, that OMI piece. Wished I could justify one. 
