St. Lawrence Seaway Management CorporationSt. Lawrence Seaway Management Corporation

A 21st century transportation system employing leading edge technology

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Managing a shared resource for the benefit of all

Learn more >

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A 21st century transportation system employing leading edge technology

Learn more >

Managing a shared resource for the benefit of all

Learn more >

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Bridge StatusChevron image

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Seaway MapChevron image

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The SeawayChevron image

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SLSMC 2021 Annual Corporate Summary

Theodore Too made a special stop at the Iroquois lock

Seaway Visitors’ Center Opens July 2, 2021

Ships Will Sound Their Horns in Canada to Support Urgent Need to Vaccinate Seafarers

Great Lakes St. Lawrence Seaway Development Corporation Unveils New Corporate Seal

Pleasure Craft Lockage Season at Iroquois Lock

How to Pay Pleasure Craft Tolls