Pass Aux Herons - Main Channel
Fixed · FixedPass Aux Herons - Main Channel is a fixed bridge with 83 ft of vertical clearance at mean high water.
Clearances are from NOAA charts, referenced to mean high water. Actual clearance is lower at higher tides and storm surge. Always confirm against your vessel's air draft and the posted clearance gauge before transiting.
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Frequently asked
What is the clearance under Pass Aux Herons - Main Channel?+
Pass Aux Herons - Main Channel has about 83 ft of vertical clearance at mean high water, from NOAA chart data. Real clearance drops at higher tides, so leave a margin for your air draft.
Tides & conditions at this crossing
Clearance under Pass Aux Herons - Main Channel shrinks as the tide rises. Check the water level and marine conditions at the nearest NOAA station, Dauphin Island Hydro (4 mi away).
Nearby bridges
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