33 CFR § 117.1037 - Cowlitz River.
(a) The draw of the Burlington Northern Santa Fe railroad bridge, mile 1.5, shall operate as follows:
(1) The draw shall open on signal if at least 24 hours notice is given.
(2) In the event of an emergency declared by the Cowlitz County Department of Emergency Services, the bridge shall be capable of opening upon two hours notice. Notification of emergencies and requests for openings during emergencies are initiated through the Cowlitz County Department of Emergency Services.
(3) The operating machinery of the draw shall be maintained in a serviceable condition and the draw shall be opened and closed at intervals frequent enough to make certain that the machinery is in proper order for satisfactory operation.
(4) During periods of fog or similar periods of reduced visibility, the drawtender, after acknowledging the signal to open, shall toll a bell continuously during the approach and passage of the vessel.
(b) The draw of the Allen Street Bridge, mile 5.5, need not open for the passage of vessels.