BN Railroad
Lift drawbridgeBN Railroad is a lift drawbridge. Closed, its spans are charted from 39 ft to 54 ft of clearance, measured to a local datum. Open, it is charted at 200 ft.
Clearances are from NOAA chart US5PDXFV, measured to a local datum. The clearance shown is the lowest charted for any of its spans. Actual clearance is lower whenever the water stands above that level. Always confirm against your vessel's air draft and the posted clearance gauge before transiting.
Pathr nautical charts
BN Railroad on the chart
Find the bridge and its charted vertical clearance in one view. Select a pin to compare nearby bridges, see open and closed clearances where charted, and open its operating details.
How to request an opening
We don't have this bridge's operating rule yet. Many drawbridges open on a schedule or need advance notice. Check 33 CFR 117 for Washington or call the tender before you plan around it.
Frequently asked
What is the clearance under BN Railroad?+
BN Railroad is a lift drawbridge. Closed, its spans are charted from 39 ft to 54 ft of clearance, measured to a local datum. Open, it is charted at 200 ft. These figures are from NOAA chart data. Real clearance drops whenever the water stands above the level they are measured to, so leave a margin for your air draft.
How do I get BN Railroad to open?+
Contact the bridge tender on VHF-FM, or sound the required signal. We don't have this bridge's operating rule yet. Many drawbridges open on a schedule or need advance notice. Check 33 CFR 117 for Washington or call the tender before you plan around it.
Tides & conditions at this crossing
Clearance under BN Railroad shrinks as the water rises. Check the water level and marine conditions at the nearest NOAA station, Knapp Landing, Willow Bar (4 mi away).
