Movable bridges are made to move so that big things can pass underneath. In most cases those things can be made taller and taller, and they’ll still be able to go through open bridges (just so long as they don’t get too wide, which has happened with boats trying to transit the Panama Canal).
A link in the recent WaterWire (the e-newsletter of the Waterfront Alliance) led to a story about raising the Bayonne Bridge. Basically, the 151-foot clearance is too low for the new giant cargo ships to fit through on the way to Port Newark and Port Elizabeth. The clearance needs to be 215 feet. If something isn’t done soon, the ports will suffer. (If the bridge is changed, will tugster need to change the photo at the top of his blog?)
Last April, Karen and I took a walking tour of Bayonne organized by the Municipal Art Society of New York. Part of the tour was a walk over the Bayonne Bridge to Staten Island. Here are some of my photos from that tour: