(a) The draws of the US 101 Bridge, mile 11.1, (541) 888-4340, and the Umpqua River railroad bridge, mile 11.5, (877) 928-5924, at Reedsport, Oregon, shall open on signal if at least two hours' notice is given via telephone.

(b) The draw of the Lower Smith River Road bridge across the side channel of the Umpqua River, mile 11.1 near Reedsport, need not be opened for the passage of vessels.