Mokelumne River Swing Bridge
Swing drawbridgeMokelumne River Swing Bridge is a swing drawbridge with 8 ft of clearance closed, measured to mean high water. It opens to unrestricted height.
Clearances are from NOAA chart US5CA46M, measured to mean high water. Actual clearance is lower whenever the water stands above that level, as at higher tides and in storm surge. Always confirm against your vessel's air draft and the posted clearance gauge before transiting.
Pathr nautical charts
Mokelumne River Swing Bridge 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
the Mokelumne River Bridge, mile 3.0, at East Isleton shall open upon signal as follows: (1) From November 1 through April 30 from 9 a.m. to 5 p.m. (2) From May 1 through October 31 from 6 a.m. to 10 p.m., except that during the following periods the draw need only open for recreational vessels on the hour, 20 minutes past the hour, and 40 minutes past the hour: (3) At all other times the draw shall open on signal if at least 4 hours notice i
Source: US Coast Guard drawbridge regulations, 33 CFR 117.175 (Mokelumne River). Confirm before transiting.
Frequently asked
What is the clearance under Mokelumne River Swing Bridge?+
Mokelumne River Swing Bridge is a swing drawbridge with 8 ft of clearance closed, measured to mean high water. It opens to unrestricted height. 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 Mokelumne River Swing Bridge to open?+
Contact the bridge tender on VHF-FM, or sound the required signal. This bridge requires at least 4 hours advance notice. Operating schedule: the Mokelumne River Bridge, mile 3.0, at East Isleton shall open upon signal as follows: (1) From November 1 through April 30 from 9 a.m. to 5 p.m. (2) From May 1 through October 31 from 6 a.m. to 10 p.m., except that during the following p
Tides & conditions at this crossing
Clearance under Mokelumne River Swing Bridge shrinks as the water rises. Check the water level and marine conditions at the nearest NOAA station, Georgiana Slough entrance (0 mi away).
