Same thing here. Took a lower bridge over part of lake Ontario. High profile warning so taller bridge was closed (you'd have time to call 911 yourself if you went off that bridge).
I stopped at the lower bridge to check it out because they had just dragged a blown-over semi off that one on it's side because they couldn't stand it up. Police started letting trucks over, so I went too. Loaded, no problem.
Took the same way back after delivery. Empty. Gust from behind at an angle and trailer wheels on one side lifted probably a foot. Floored it to get down the rest of the bridge.
Un-nerving is how I would describe it.
I was on the "short side" of the wind too meaning if it flipped me I would have to rely on the guard rail to keep me out of the water.