I don’t know that bridge, but can tell you a RR bridge story.
Last year my wife and I took a boat trip from our place close to the Savannah River, about 50 river miles above Savannah, to Cape Fear, NC. All packed and loaded for 2 weeks of boat traveling, son dropped us off at the ramp and took the truck home. I noticed the river was higher than normal.
5 miles down river we got to the first RR bridge, which I’ve never had a problem getting under in the past, tight but never an issue. Not this time. Eased up to and eyeballed it, no go, no way. My wife gave me a look that hurt[:0] Sign on bridge says for opening, call 1-800-… with 24 hours notice.
I pulled away away from the bridge, current was real strong, got out the toolbox and took the VHF and GPS antennas off the T-top and eased up to the bridge again, pointing up current, idling in forward but slowly moving backwards. Got right up close and determined everything would clear except the rod holders, welded on. Still needed 8 more inches.
Wife gave me another look that hurts, asks what now, go home? I tell her, heck no, we are spending the night in Beaufort, and I’m going under that bridge. Told her to move anything she wanted to keep dry to high ground. What now she asks? I told her I was going to sink the boat and drift under the bridge. Which is when she called me a crazy SOB. Heck, after 40 years of marriage I figured she already knew that.
I pulled all the plugs, glug, glug, glug, eased back to the bridge agai,n pointing upriver in forward but drifting slow back. As soon as we sank enough to clear I let the boat drift under it, then put in the plugs, pumped the boat and we were on our way again. And she finally smiled, and again called me a crazy SOB. 10 miles later we got to another one just like it, and I sank it again, and we spent the night in Beaufort 
Capt. Larry Teuton
Cracker Built Custom Boats
“Ships are the nearest things to dreams that hands have ever made.” -Robert N. Rose