The far West side of the railroad/Jack knife bridge, near the West support has some metal angle welded underneath, so is much lower here, Stay in center and you are fine. This bridge has less clearance than the drawbridge downtown. Motor up slow to see if you will clear and if not call the phone # above and they will call dispatch to open. My longest wait has been 13 minutes so far this year, normally 2 minutes. On my boat, if the water is touching the signs with the phone number on it, I need to call.