Soo Locks



This excerpt from an old Navy manual came to mind as I sought “permission to come aboard” across the gangplank of the U.S. Coast Guard Cutter Mackinaw, docked just above the locks at Sault Ste. Marie, Michigan, on a brisk mid-March day. Read more


This shipping season, the Lake Superior region was expected to reach its “500 Freezing Degree Days” mark by Dec. 31, 2017, fully two weeks ahead of the usual Jan. 8 date. Read more


Around the Circle This Week: March 25, 2016

The Soo Locks open today, researching sediment core samples of Portage Lake, saying goodbye to the wolves of Isle Royale, a proposed direct-reduction iron plant, a scheduled space record and more news. Read more

Mar 25, 2016 12:45 PM Superior Notes

Soo Locks Webcam, August 3, 2015

U.S. Army Corps of Engineers

MacArthur Lock in Sault Ste. Marie Closed for Emergency Repairs

One of the Soo Locks has been temporarily closed and dewatered to repair a malfunctioning set of gates. Read more

Aug 3, 2015 5:03 PM Superior Notes 2 Comments

Soo Locks

Bill Howe

On June 18, 1855, the steamer Illinois locked through upbound and ushered in a new era in Great Lakes shipping. But the Soo Locks didn’t come easy. The planning and building of the locks were as fraught with obstacles as the waterway they traversed. Read more

, Maritime

Soo Locks - Bob.jpg

Bob Berg / Lake Superior Magazine

A late-season surge pushed the tonnage on the St. Lawrence Seaway to 38.9 million during the 2012 season, up 4 percent from last year. Shipping through the Great Lakes has rebounded since 2009, when Seaway tonnage slipped to just 30.5 million. Read more


  • Soo Locks

    U.S. Army Corps of Engineers

    Soo Locks

    The Soo Locks in Sault Ste. Marie, Michigan, are situated near the International Bridge linking to Sault Ste. Marie, Ontario.

LSM Newsletters
Keep up with the magazine, news and happenings around the Big Lake. Enter your email address and select which Free Newsletters you'd like to receive.



August 23, 2019


August 24, 2019


August 25, 2019


August 26, 2019

Sorry, no events.


August 27, 2019

Sorry, no events.


August 28, 2019

Sorry, no events.


August 29, 2019

What Folks Are Saying (Right)