Monday, July 3, 2017

Soo Locks on the St. Marys River


If a view is looking upstream, then we generally see some of the bridges over the St. Marys River.

A time-lapse video from a boat going upbound (source).

A time-lapse video of Michipicoten locking downbound with H Lee White leaving the Poe Lock in the background..

June 8, 2022: 
U.S. Army Corps of Engineers, Detroit District posted
The ocean going vessel ALE enters the Poe Lock in Sault Ste. Marie, Michigan on June 8 as seen from the Lockmaster's tower. Also seen in the photo are the empty MacArthur Lock which is currently undergoing maintenance and the New Lock at the Soo construction in the distance near the International Bridge. 
Kent Rengo shared

U.S. Army Corps of Engineers, Detroit District posted
#PhotooftheWeek The M/V Herbert C. Jackson and M/V Burns Harbor traverse the Soo Locks on a sunny summer day earlier this week.
Oct 5, 2021: safe_image for Lake Superior below the seasonal long-term average first time since April 2014

Dec 3, 2021: LakeSuperior
Chippewa County Historical Society posted
Shipping traffic on the St. Marys River resumed a few days ago after the winter break. Once again, we hear the occasional boat whistle familiar to all who have spent very much time in the Sault. Here is a photo from April 26, 1956 with still a bit of upper river ice in the lock approaches. Quite a bit of vanished history is on view in the image. The old Poe Lock (second from the right in the photo) would be replaced twelve years later by the much larger new Poe Lock. In order to accommodate the wider ships being planned, the piece of real estate I’ll call "bridge island," on which the railroad swing bridge pivoted, had to be removed to allow wider ships to use the approach canal for the MacArthur and Poe locks. The swing bridge (open, in right foreground) was replaced by the present-day lift bridge in 1959. Note that the third and fourth locks were still in operation at the time of the picture. The Union Depot railroad station, no longer around, can just be seen in the distance, to the right of the stern of the ship waiting to enter the MacArthur Lock. And, of course, there is no sign yet of the International Bridge for autos and cars, which opened six years after this picture was taken, and which would dominate a photo taken today from the same vantage point. Walter Materna Collection, neg. # 330.1
This photo and many others can be viewed on our website at and is available for print at the Chippewa County Historical Society.
Bill Krieger: Bob Brunsdon and I worked for the Corps of Engineers during the blasting away of that bridge island. We would run out as the warning signals blasted, set up a seismograph and wait for results. One night, when they didn’t cover the blast quite as well as they should’ve, we were showered with rocks and mud. The fence near the blast was “dented” a lot and windows were broken in the buildings beyond the fence. They almost had it covered πŸ™‚ thanks for the memories.
Kent Rengo shared
Busy April 1956 day.

Ric Mixter's Wrecknology posted four images with the comment: "2022 is scheduled to bring huge changes to the old Sabin Lock (opened 1919 closed 1989). The old cement walls will be blasted out and rock will be placed in the decommissioned Davis lock, eventually filling it in. Here are some pictures of the Sabin and Davis locks then and now."
Andrew Haenish shared

Graphic of the Sabin (fourth lock) showing the engine building and electric captstan.

Davis gates dwarf the men standing below.

Ric Mixter photo of Sabin lock with coffer dam (and crane barge Paul Bunyan). This will be dug out and widened for a new lock.

Lock dimensions:
  • MacArthur Lock, 1943: 800' x 80' x 29.5'; this can handle salties, but not Lakers (Video from David Kaye)
  • Poe Lock, 1896: 800' x 100'
  • Poe Lock Rebuilt, 1968: 1200' x 110' x 32', this is the one the lakers must use. That length and width can also handle a 15-barge tow. But I suspect barges can't risk being on a Great Lake if a storm hits.
  • Davis lock, 1914: 1350' x 80' x 23.1'; light freighters, tour boats, and small craft when traffic warrants
  • Sabin Lock, 1919: same as Davis but it has been "mothballed."
Al Miller posted
Superior City is tied up in the old Poe Lock while one of Jim Hill's fancy passenger liners -- either North West or North Land -- squeezes in. Superior City's stack is all silver, so this view would be from 1901 to 1904. A. E. Young hauled his camera up to the tower of the administration building to get this view. It's one of many views he took from that vantage point.
[The view looks naked without the big bridges.]
Robert Campbell posted
The Britannia is shown in the MacArthur lock as Queen Elizabeth and Prince Phillip tour the lakes to commemorate the opening of the Seaway in 1959. The photo taken by Ruth Stevens.
Kent Rengo shared
Mark Jones: I got to tour Britannia in August and I have to say it was the highlight of our trip to the UK.

Craig Hensley Photography posted
The M/V Isabelle G in the Poe lock. The ship is lowered 21 feet from Lake Superior to the St Mary's river to reach Lake Huron and onward to Detroit.
Tech: DJI Mavic Air 2s
Date: 9/3/21
Location: Sault Ste Marie, Michigan
Mike W Schattl: I thought these were called the Soo locks....
Dennis DeBruler: Mike W Schattl Collectively, the four American locks are called the Soo Locks. But each lock has a name. From the foreground to the background we see the MacArthur, Poe, Davis and Sabin Locks. Thus the ship is in the Poe Lock. The Davis and Sabin locks are long enough to handle Lakers, but they are both too narrow. The Sabin Lock has been "mothballed." Since 1986, the plan is to replace the Sabin and Davis Locks with a second lock that is big enough to handle the Lakers that the 1968 Poe Lock made possible. They broke ground on June 30, 2009. But funding has been a bad joke. As Craig's photo documents, very little progress has been made on the rebuild.
Michelle Briggs: Dennis DeBruler Actually a lot of progress has been made in the last few years. Dredging began last year in the upper channel (where you see all the brown water) to deepen it to the current project depth. That part is scheduled to wrap up this year. In spring 2021 work began on the 100+ year old approach walls, just west of the area in the photo they have installed a concrete mixing plant and all their materials are stock piled and contractors are working on it and will be continuing next year. Demolition of the Sabin Lock to prepare for chamber construction could begin as early as next year.

Jason Pechette posted
American Mariner in the soo locks and Joe Block waiting

USACE Detroit District posted
A crowd assembles to watch the placement of the first stone of the original Poe Lock in Sault Ste. Marie, Mich. on this day in 1891. The original Poe Lock replaced the State Lock and remained in service until 1955 and was removed to make way for the current Poe Lock in 1961.

USACE Detroit District posted
With only a short break in navigation each year crews both past and present make the most of each day and every opportunity to work on critical equipment. This photo, taken #OTD in 1935 shows the Davis Lock serving as a dry dock allowing for hull inspections and repairs while work is underway on the lock.
Andrew Haenisch shared
USACE Detroit District posted
[On Mar 24, 2914], the longest navigation lock in the world at that time was months away from opening. Built in just seven years, the Davis Lock is 1,350 feet long and 80 feet wide. Its lower operating gates, each leaf measuring 51 feet high and 45.5 feet wide dwarf the men posing in front of them in this March 17, 1914 photograph.
Chris Bauman: I'm guessing they built it for multi ships at a time.

I Love Sault Ste. Marie, Michigan posted
1000' x 105' Burns Harbor in the Poe Lock while the 678' x 70' Wilfred Sykes in the MacArthur Lock. Sunday midday 5/23/21. -Jim
Rudy Maki posted
Eugene J. Buffington downbound in the MacArthur lock, Aug. 6, 1971. John Dykstra waiting in background, Ernest T. Weir leaving the Poe lock.

Public Domain from PostBulletin
The Algoma Guardian enters the MacArthur Lock

Dan Barber posted (source)
Circa 1909 - Sault Ste. Marie: the Sabin Lock empty.
[A nice view of the double-bascule bridge.]

USACE, Detroit District posted
With the Sabin Lock nearing completion in 1919, workers assemble the lower guard gates. These gates are 51-feet high and each leaf measures 45.5-feet long.

Al Miller posted
A. H. Ferbert mingles with good company at the Soo in a postcard view from about 1963.
Comments on Al's post

Gerald Vilenski posted
Soo Locks, 1890. The ship up front is the Nelson of Hampton. The rest are too difficult to read...
Mark Lambert
Mark Lambert\
Mark Lambert
Mark Lambert

Steve Vanden Bosch posted three photos with the comment: "These photos are from the Library of Congress of the Locks with one photo showing the whaleback barge 130 being towed out of the Poe Lock downbound."

Frederick Selstrom Now that's Boat Watching !

Mike Harlan posted
Logs through the Locks , Ron Hoult
I wonder when this last was done.
I think it stopped in the 1960s.

I'm saving a satellite image since it is supposed to change because the second big lock has finally got some funding.

mi0608 (an index of 14 more photos)

USACE, Detroit posted
It takes a pretty big hole to build what will be longest lock in the world. This 1911 photo shows excavation well underway for what will become the 1,350 foot long Davis Lock in Sault Sainte Marie, Michigan. When it opened in 1914 it was the longest lock in the world.
Jessica Scott Burns Back when things got done. Still waiting for this new lock; 34 years now?

Andrew Haenisch shared

Emmet McNamara posted
Coming in
[Note the tugboat near the bow that is shoving the boat up against the lock's guide wall. Since we can see the bridges, this boat is downbound.
The double-arch bridge is the International Bridge.]

I Love Sault Ste. Marie, Michigan posted
Photo credit: U.S. Army Corps of Engineers

U.S. Army Corps of Engineers, Detroit District posted
In February 1914 crews were working on the upper gates of the Davis Lock in Sault Ste. Marie, Michigan. The lock went into operation in October that year. 

Since 1986, the Davis and Sabin Locks are supposed to be replaced by one lock that is big enough to handle lakers. They broke ground on June 30, 2009. But it hasn't been funded. (Buying a spade for ground breaking is a lot cheaper than actually building the thing.)

Lukas Iron shared mlive2017
Soo Locks being eyed for Infrastructure upgrades? From Sault St Marie.Ontario..Will it lead to improved rail transportation?

A rendering showing the replacement of the Sabin and Davis with a
second Poe-sized lock. Courtesy of USACE
The replacement of the two unused locks by a $580 million second "laker" lock is on a list of 40 potential U.S. infrastructure "megaprojects." I expected a lot of iron ore and grain to be shipped through the locks, but I was surprised that coal is also shipped. It turns out it is coal from the Wyoming Basin that is transloaded to boats on the west end of Lake Superior. 70% of the freight through the Soo Locks uses the Poe lock.

I Love Sault Ste. Marie, Michigan posted

Clarence Vautier posted
[Downbound boats in both the Poe and MacAurthor locks.]
Danny Thompson shared
On this day in 1913, crews were busy installing a crib dam below the original Poe Lock in preparation for work on the approach canal and piers.
You can browse our entire collection of glass plate images at the Clarke Historical Library's website:…/default.aspx
Danny Thompson shared
This photo from this date in 1893 shows men working on the First Poe Lock. Clearly safety requirements were a little different back then. What things do you see that would no longer be allowed?
Anne Boyd Earle No hard hats; no life jackets or tether lines; is that seriously someone walking on the cables of that crane??? OSHA would have a field day with this.
Terry Mitchell Anne Boyd Earle. Your right but I worked for ACE and our Safety is much Harder than OSHA Ours is more strict in addressing situations. For instance take Cranes We have a much more testing before they are Certified. Plus the riggers have to be Certified to rig a load of say palletized material. And We cover Divers. LOL The list goes on and on.

The last ship through the locks in 2019 was on January 15.
It takes 22 million gallons to raise a ship 21 feet, but 73.3 million gallons have to be pumped out to do winter maintenance. (There are several more photos in this reference that I did not copy including some hard-hat diving to open valves on the floor.) [mlive]

First, they have to build a pile of "stop logs" so the gates can also be dry for maintenance. Each log weighs 49 tons.
Crane Barge Harvey will go down and rest on the bottom of the lock when the water is removed.
After 17 hours of pumping, the lock is ready for inspection.
Two of several photos from mlive showing how they used an industrial vacuum cleaner to clean the muck out of the culverts. I don't know for sure if these are the same culverts. There is a culvert on each side of the lock and they can move a million gallons of water a minute. They are big enough that you can drive a truck through them. Photos courtesy of the U.S. Army Corps of Engineers, Detroit District
1, before
2, after
Henry Olrogge posted
[Spring is coming, so the 888 is removing the stop gates after the winter repairs.]

Bev Sharw shared
Das Gift Haus posted
When the Soo Locks ( Poe Lock) are very busy and you are on a tour boat with a schedule, sometimes you have to share, with a freighter. We had to get in front to avoid prop wash and be first out. Talk about splitting hairs, we passed it in the Lock. With a veteran 30-year tug boat captain, no problem.
Photo and text by Edw J Reining


USACE posted
On this day in 1907, only 11 days from the opening of the navigation season, crews at the Soo Locks had their hands full removing ice from the Poe Lock.

This photo of Soo Locks is courtesy of TripAdvisor
[If you click the photo on their site, you can navigate through some more historic photos of the locks.]

David Kaye posted
Lee A Tregurtha in the Soo Lock Canal. 7-2-19
[The reason for saving this photo is that the bascule leaves are up.]
U.S. Army Corps of Engineers, Detroit District posted
It was a day of heavy traffic for crews on duty at the Soo Locks on this day in 1892.

Gerald Vilenski posted
A Whaleback entering Weitzel Lock in Sault Sainte Marie, Michigan. Circa 1910. Looks like the little girl in the foreground may be taking a picture with a box camera...
Paul Mathews Can't get that close anymore

Mike Harlan shared
Del Jackson Probably a Kodak 620.
William Worden This is whaleback barge 131, so she might be waiting for a line from her towing steamer out of the photo ahead of her, or it might be the steamer behind her. There's another photo in the Library of Congress/Detroit Publishing collection that shows 131 in the lock with the Mariska, which would have been her towing steamer.

Ships wait to enter the Poe Lock during summer 2015 during a traffic backup caused by unexpected repairs to the MacArthur Lock.
"The Soo Locks can’t accommodate 1,000-foot freighters today, Sept. 10, [2019,] since its largest lock is out of commission for emergency repairs. This is the second quick fix on the Poe Lock in about two weeks, UpNorthLive reports. The closure could cause a backup at the shipping channel....The Poe Lock is scheduled to be closed to navigation in order to complete repairs to the Upstream Gate 1 sill today, September 10, 2019.
The lock is expected to be closed to traffic for approximately 12 hours, beginning at 9am to allow divers to safely make repairs.
Concrete grouting of the sill is required to mitigate the risk of further concrete degradation. A more permanent repair will be made during the winter shut down period when the lock is de-watered."

U.S. Army Corps of Engineers, Detroit District posted [Dec 17, 2019]
The MacArthur Lock in Sault Ste. Marie, Michigan closed for the season on December 15. Critical repairs began immediately, including replacing gears that operate the lower gates and performing electrical system upgrades.
The Poe Lock will be open to vessel traffic through January 15. Once closed, the Poe Lock will be dewatered for work on the gates, sills, emptying valves and cleaning the drainage system. Teams will conduct a thorough inspection to ensure safety and reliability.
All work is scheduled to be complete before March 25, when the 2020 navigation season begins.
Becky Algren Jones Just pray the Pie will handle ok without the help of the McArther
Gary Thompson Becky Algren Jones very few ships are small enough to fit through the Mac anyway.

Great Lakes Dredge & Dock
USACE, Detroit posted fourteen photos with the comment: "When the last freighter of the 2019 navigation season cleared the Poe Lock on January 15, crews at the Soo Locks immediately began working to dewater the Poe Lock to prepare for a busy maintenance season.  #SooLocks  #WinterMaintenance  #USACE"
Ben Stalvey shared with the comment: "One sweet looking MLC 300."
[mlive also has a copy of these USACE photos and captions. But my copy is ad free. The mlive article does have some background information in its intro.]
Shortly after the last freighter for the season left the lock, crews moved cranes and barges into the lock to begin setting stop logs (steel bulkheads) at the upper end.
Adam Bertrand US army LT Tug boat
Which one??

U.S. Army Corps of Engineers, Detroit District It is the USACE Tug Billmaier. This tug normally operates out of the Duluth Area Office but is supporting lock maintenance activities this winter.

Using the new heavy lift crane on a floating platform, eight stop logs are set into place to create a temporary dam at the upper end of the lock. Each log spans the 110 foot wide canal and weighs about 50 tons.

Workers remain in constant contact with the crane operator as the logs are lowered into slots in the lock walls. Crews on both sides of the canal ensure that the logs descend evenly to prevent them from sticking.

After setting the stop logs, the crane moved East in the lock to set a temporary bridge across the Poe Lock.
Don Paton May I ask the weight of temporary bridge? looks heavy.U.S. Army Corps of Engineers, Detroit District The bridge actually weighed more than the stop logs when it was set into place. The bridge was over 60 tons. Probably due to its width and the reinforcing required for heavy equipment to use it.

Workers help guide the bridge into position. Having temporary bridges across the MacArthur and Poe Locks has allowed more flexible use of heavy equipment during lock maintenance. Without the bridges, all equipment had to be delivered by barge before dewatering the lock and could not be removed or used elsewhere on the facility until spring.
Bob Brickman Is this a ‘Bailey Bridge’?U.S. Army Corps of Engineers, Detroit District This one is a panel bridge, similar to a Bailey Bridge

The Detroit District Dive Team plays an important role in dewatering the lock. Divers hook up bubbler systems and chink leaks between the stop logs.

With water temperatures around 34 degrees, divers were comfortable working in dry suits but on the surface tenders braved 18 degree air temperatures with the windchill making it feel like 1 degree.

The final dewatering task for the heavy lift crane is setting stop logs across the lower end of the lock. These logs, like the ones at the upper end, weigh about 50 tons each and will span the 110 foot wide canal. The crane will spend the winter at the lower end providing lifting support to crews working on the lock floor.

Workers help ease the log into its slot in the lock wall while the signalman tells the crane operator to hoist the load.
Don Paton It’s me again, are these logs stored onsite for use again? Or where they fabricated for this job only??Greg Turner Both. They are stored onsite but additional stoplogs were procured so that the dewatering gate could also be maintained.
[A comment on another photo indicated the stop logs weigh 50 tons apiece.]

As the log is lowered into the water a worker on each side holds a sounding line to monitor the depth of the log. This way even when the log is out of sight they can ensure it is sinking evenly and verify when it has reached bottom.

A view of the installed stop logs at the upper end. At the right the intake ports for the lock are visible. These openings in the lock monolith allow water to flow through the culverts and into the lock chamber.
U.S. Army Corps of Engineers, Detroit District The logs are just over 4 feet high and across the center, where they are widest, are 8.5 feet wide. To span the entire canal and fit within their slots they are 116 feet long (6 feet longer that the width of the canal).

A view of the dewatered Poe Lock taken from the upper stop logs. Despite a snow storm crews were busy laying up the lock and staging equipment for the busy maintenance season.

A crane lowers equipment to the lock floor.

A view of the lower gates from the lock floor. Each gate is 57 feet tall and weighs 225 tons.
U.S. Army Corps of Engineers, Detroit District Greg Turner gate two is pictured, if you look in the upper right you can see part of gate three in its recess.
[Unfortunately, I don't know how the gates are numberd. I presume the numbering includes dewatering gates as well as the regular gates.]

Jeff Koenigs commented on Ben's share
3 new machines set up there 12000 was July MLC 300 and GHC 130 in november.

A video of "USCG Mackinaw up bound out of the Soo Locks around 12:45 today. 3-19-19."

A video of "Three footers in the Soo Harbor, Mesabi Miner, Paul R Tregurtha, Edgar B Speer on a beautiful summer day. Viewed from the Tower of History. 6-8-18"

A video of "Wilfred Sykes being lowered in the MacArthur Lock then leaving. 7-17-18
Time Lapse Video." There is also a sliver of a CSL boat entering the adjacent lock.

President’s Promise to Fix the Soo Locks Resonates With Sault Residents (source)

New Soo Lock that could employ thousands in Michigan pushes forward
New Soo Lock economic validation study complete, I wonder how many times these locks have been studied to no avail. The problem is that the studies themselves cost money.

U.S. House approves authorization for replacement Soo Lock (source)

State of the locks

Army Corps of Engineers budgets $75 million toward Soo Locks upgrade  $75m struck me as a drop in the bucket (lock?). But a step is better than no steps since 1986 when the new lock was authorized. "If Congress appropriated the requested $75.3 million for the project next fiscal year, it would keep the project on track for completion seven to 10 years from whenever construction starts, said Lt. Col. Greg Turner, district engineer for the Army Corps' Detroit District."
The U.S. Army Corps of Engineers is proposing a second full-size lock for the complex at Sault Ste. Marie. It would cost about $1 billion. Officials say the proposed 2020 funding would pay to begin construction of upstream approach walls, continue design of the lock chamber and finish upstream channel deepening. Lt. Col. Greg Turner says it would keep the project on track for completion in seven to 10 years. [ClickOnDetroit]
Phase one of New Soo Lock construction to begin Spring of 2020The image above is an Artist Rendition that illustrates what it might look like if a Second Poe-Sized Lock replaced two of the older locks (left portion of the photo). The project has received more than $32 million in the fiscal year 2019 work plan. (Photo Courtesy: U.S. Army Corps of Engineers, Detroit District)

USACE-Jan 19, 2022
Corps of Engineers receiving $561 million from infrastructure bill for Michigan, Great Lakes
James Torgeson shared
Here's a great graphic of the new lock that is being built at the American Soo. It will duplicate the dimensions of the 1968-built Poe Lock so that the 13 "footers" and other longer lakers have an alternate route in case the Poe is unavailable for whatever reason.

safe_image for Smiles Up In the Great Lakes as Soo Locks Upgrade Gets Full Funding
“The $479 million announced today [Jan 20, 2022] (from the IIJA) will provide the remaining funding needed to complete the new lock project – above and beyond the $480 million provided in FY2022.”

Saginaw River Marine Historical Society posted
Ric Mixter will do a FREE presentation for the Saginaw River Marine Historical Society in March. "The Soo Locks" starts at 6:30 pm on Saturday, March 21, 2020. More about this presentation at
Ric recently wrote and produced the segment “Soo Locks” for Great Lakes Now, a monthly news program for Detroit Public TV. He will share clips from the show and highlight some of the new technology designed to service and maintain the locks.

Soo Locks Drained And 6000,000 Pounds of Debris Removed
[This article has several more photos.]

safe_image for Construction of new $1 billion Soo Lock begins
The 1,200-foot lock to match the Poe Lock will be completed in November 2021.
Over 85% of commodity tonnage through the Soo Locks is restricted by vessel size to the Poe Lock.

USACE posted
The first load of bedrock arrived from the Upstream Channel Deepening of the New Lock at the Soo project on Thursday, July 16 in Sault Ste. Marie, Michigan.
We are excited about the ongoing progress on this mission to build a redundant lock at the Soo, adding resiliency to our nation's shipping supply chain!

Al Miller posted
Arthur M. Anderson makes an icy passage downbound at the Soo. This undated photo is from my collection of old prints. From the appearance it could be winter or spring -- around Lake Superior those seasons often look alike. I'm guessing it's spring, so appropriate for today.
Richard Wicklund: The Anderson is in the MacArthur Lock by the viewing stand on the left, which means this picture was taken before its lengthening in 1975. The USS circle below the name was applied to Tin Stackers in the late 1950's, so this could be a 1960's or early 1970's photo.
Al Miller: Richard Wicklund Good points. I can just make out the International Bridge in the background, so that would push it into the '60s.

Lake Superior State University posted
This year [2021] the Soo Locks opened up 12 hours earlier than normal, marking the official start of the shipping season in the Great Lakes! The Laura L. Vanenkevort and Joseph H. Thompson tug-barge combo was the first ship of 2021 to be welcomed through the Soo Locks on Wednesday, March 24.
You can read more about the opening day at
U.S. Coast Guard photo by Chief Petty Officer John Masson.

safe_image for Lake Superior and Michigan-Huron have both continued their seasonal declines

Jan 16, 2022: U.S. Army Corps of Engineers, Detroit District posted
It was a full lock for the final lockage of the [2021] navigation season at the Soo Locks.

U.S. Army Corps of Engineers, Detroit District posted
The final lockage for the season at the SooLocks had not one, but THREE boats. Leading the way is the U.S. Army Corps of Engineers tug Owen M. Frederick followed by the U.S. Coast Guard Cutter Biscayne Bay and the 635-foot-long Sam Laud. The Laud surprised many boat watchers by sneaking out of the steel mill behind the Indiana Harbor to pass through the Poe Lock this afternoon.
Don Paton: T’was a tough couple of days, a lot of ice seemed to happen very quickly this week. But now it’s over and crews can get started with the fixes. I’ll be watching.

Kent Rengo shared

I picked this screenshot of the time-lapse of it going through the lock because it catches some of the construction activity on the new lock.
Screenshot @ 0:19
We are proud to carry the building blocks of America! πŸ‡ΊπŸ‡Έ
Here is our M/V Herbert C. Jackson delivering materials for the New Lock at the Soo. #shippingmatters
πŸŽ₯: Ben Feinman

I've never seen a lock bone dry before.
I Love Sault Ste. Marie, Michigan posted @ 0:00
If you want to see something unique, the MacArthur Lock at the Soo Locks is currently empty and will be for what is said to be a couple of more weeks. Don’t worry though, the Poe Lock is currently open and that is the one that most of the ships use so you can watch ships lock through and also see an empty lock from the viewing platform!
Steve Harris shared

I Love Sault Ste. Marie, Michigan posted @ 0:12
Screenshot @ 0:27
A tour boat goes around the tug Samuel de Champlian and her barge Innovation while they where tied up inside the Poe Lock.
Interlake Steamship Company posted

USACE posted 21 photos showing how they dewater the Poe Lock (2022 repairs). Pat Cameron shared.

"Each leaf of the lower operating gates is 63 feet wide, 60 feet high and weighs about 225 tons."
They used three 200-ton hydraulic jacks and oak timbers to raise the leaf to make room for the repair.

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