12 Dec 2024

MacArthur Lock closing for seasonal repair, maintenance

The Soo Locks’ MacArthur Lock will close for the Navigation Season to conduct seasonal repairs and maintenance on December 16, 2024. The Poe Lock will remain open until Jan. 15, 2025, or until commercial traffic ceases, whichever occurs first. The Soo Locks operating season is fixed by federal regulation (33 CFR 207.440). “The 800-foot-long MacArthur Lock, built in 1943, is now 81 years old; this maintenance period is critical to keeping the lock in operation during the shipping season,” Maintenance Branch Chief Nicholas Pettit said. The MacArthur Lock has seen 2,806 lockages and 5,170 passages (number of vessels) since opening April 24, 2024, to now, December 12, 2024.

30 Nov 2023

MacArthur Lock closing for seasonal repair, maintenance

AULT STE. MARIE, Mich. - The Soo Locks’ MacArthur Lock will close for the Navigation Season 7 a.m. Dec. 17, 2023, through April 24, 2024, to perform dam safety inspections and routine maintenance. The Poe Lock will remain open until Jan. 15, 2024, or until commercial traffic ceases, whichever occurs first. The Soo Locks operating season is fixed by federal regulation (33 CFR 207.440). “The 800-foot-long MacArthur Lock, built in 1943, is 80 years old; the maintenance period is critical to keeping the lock in operation during the shipping season,” Maintenance Branch Chief Nicholas Pettit said.

19 Jun 2022

MacArthur Lock opening after seasonal maintenance, extended repair

The Soo Locks’ MacArthur Lock will open to marine traffic June 19, 2022, after completing a critical repair that took longer than expected. The MacArthur lock was set to reopen in late April but replacing the almost 79-year-old tainter valve machinery, original to the lock built in 1943, caused the closure’s 59-day extension. “The tainter valve machinery replacement contract was a very large task,” Soo Locks Construction Chief Nicholas Pettit said. “The original machinery had to be cut into pieces and removed by crane out through a small access tunnel. The new machinery had to be fabricated in sections, lowered by crane in through the small tunnel and installed inside of the lock.”

13 Jan 2021

Soo Locks closing for seasonal repair, maintenance

DETROIT- The Soo Locks in Sault Ste. Marie, Michigan will close to marine traffic beginning 11:59 p.m. January 15 through 12:01 a.m. March 25 to perform critical maintenance. The operating season is fixed by federal regulation and is driven in part by the feasibility of vessels operating in typical ice conditions. Every year, the Corps uses the winter period to perform maintenance to keep the Soo Locks operating. The Soo Area Office team works long hours in extreme conditions to complete a significant amount of maintenance during this annual closure period. The work they perform is unique, especially given the harsh northern Michigan conditions they work in.

16 Jan 2019

Soo Locks close to undergo planned repairs and maintenance

DETROIT –The U.S. Army Corps of Engineers, Detroit District, announces the Soo Locks in Sault Ste.