Editing Soo Locks (section)

===Former locks===
*The '''State Lock''', built between 1853 and 1855. The State of Michigan was given land by the federal government to construct a lock to allow for quicker transit of new [[List of copper ores|copper]] and [[iron ore]] deposits discovered around the Lake Superior basin. The lock consisted of two chambers back-to-back to bridge the difference in water level.<ref name="History">{{cite web |title=Unlocking the Industrial Midwest: A Pictorial History of Locks at the Soo |url=https://www.lre.usace.army.mil/Portals/69/Recreation/SooLocks/Lock%20History%20Exhibit.pdf?ver=4q3SWT0YTymHF7RoSXzojg%3d%3d |archive-url=https://web.archive.org/web/20220628122423/https://www.lre.usace.army.mil/Portals/69/Recreation/SooLocks/Lock%20History%20Exhibit.pdf?ver=4q3SWT0YTymHF7RoSXzojg%3D%3D |url-status=dead |archive-date=June 28, 2022 |website=United States Army Corps of Engineers Detroit District website |publisher=USACE |access-date=16 May 2024}}</ref> Each chamber was {{cvt|350|ft|m}} long, {{cvt|70|ft|m}} wide at the top of its walls and {{cvt|61.5|ft|m}} at its bottom, and {{cvt|12|ft|m}} deep.<ref name="History"/><ref name="Michiganology">{{cite web |title=The Saint Marys Falls Ship Canal, Michigan |url=https://michigan.access.preservica.com/uncategorized/IO_b191c281-8d8f-41b6-b46a-f88009a4db64/ |website=Michiganology |publisher=Archives of Michigan |access-date=13 January 2025}}</ref> The State Lock was replaced by the original Poe Lock in 1896.
*The '''Weitzel Lock''', was built between 1873 and 1881 directly south of the State Lock, and was the first lock to be operated by the federal government. At {{cvt|515|ft|m}} long, {{cvt|80|ft|m}} wide, and {{cvt|17|ft|m}} deep, it was the longest lock in the world upon its completion. It was decommissioned in 1919, and was eventually replaced by the MacArthur Lock in 1943.<ref name="History"/><ref>''Saint Marys Falls Ship Canal (Soo Locks Historic District, Soo Canals)'', Michigan Department of Labor and Economic Opportunity, 2020.</ref><ref>Lange, Alex, [https://unwritten-record.blogs.archives.gov/2017/01/05/the-mighty-soo-construction-of-the-locks-at-sault-ste-marie-michigan/ "The Mighty Soo: Construction of the Locks at Sault Ste. Marie, Michigan"] {{Webarchive|url=https://web.archive.org/web/20200128182903/https://unwritten-record.blogs.archives.gov/2017/01/05/the-mighty-soo-construction-of-the-locks-at-sault-ste-marie-michigan/ |date=January 28, 2020 }}, ''The Unwritten Record''. National Archives, January 5, 2017.</ref>
*The '''Davis Lock''', built in 1914. At the time of its completion, the Davis Lock was the longest lock in the world at {{cvt|1350|ft|m}} long, and was also {{cvt|80|ft|m}} wide and {{cvt|23|ft|m}} deep.<ref name="History"/> It was officially decommissioned in 2010.<ref name="NewEra">{{cite news |last1=Henry |first1=Tom |title=The Soo Locks: The 'linchpin' of Great Lakes shipping is entering a new era |url=https://www.yahoo.com/news/soo-locks-linchpin-great-lakes-040100885.html?fr=yhssrp_catchall |access-date=16 May 2024 |work=The Blade |agency=Yahoo News |publisher=Block Communications |date=5 November 2021}}</ref>
*The '''Sabin Lock''', built in 1919.<ref name="History"/> It was constructed as a twin lock to the Davis Lock, and named after Louis Carlton Sabin (1867-1950), the designer of both locks, who served as General Superintendent of the ship canal at The Soo from 1906 to 1925. It was officially decommissioned in 2010 at the same time as the Davis Lock.<ref name="NewEra"/>