Ontonagon Harbor

Fixed · Fixed

Ontonagon Harbor is a fixed bridge with 33 ft of vertical clearance, measured to the Great Lakes chart datum (IGLD 1985).

Vertical clearance

33 ft

above IGLD 1985

Horizontal

126 ft

channel width

Location

46.867°, -89.317°

New York

Clearances are from NOAA chart US5MI70M, measured to the Great Lakes chart datum (IGLD 1985). 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.

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Ontonagon Harbor on the chart

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Frequently asked

What is the clearance under Ontonagon Harbor?+

Ontonagon Harbor is a fixed bridge with 33 ft of vertical clearance, measured to the Great Lakes chart datum (IGLD 1985). 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.

Nearby bridges

Duluth Ship Canal Bridge131 mi I-535 Bridge132 mi John A. Blatnik Bridge132 mi Burlington Northern Railway Bridge134 mi Richard I. Bong Memorial Bridge134 mi Duluth, Missabe and Iron Range Railway Bridge137 mi

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