Richie, there's two RR bridges. The one by Ted Hickey bridge was open (I believe it only closes for trains), there's another under the I-10 bridge. It was closed when we sailed up but opened pretty quickly, I don't believe we had to hail a bridge tender. As for the Danzinger, it has 50' of air clearance and I believe your Catilina 28 has ~40' of air draft. Certainly double check those numbers yourself but it looks like you have enough clearance that the Danzinger doesn't need to open.
Hope that helps,
Jason