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Five-month Chicago Harbor lock closure to begin November 16

Posted on November 4, 2020

The Chicago Harbor Lock will be closed to all vessel traffic starting from 7 a.m. CST Monday, November 16, 2020, through 4 p.m. CDT Wednesday, April 14, 2021, for reconstruction of the north chamber wall.

In the event that construction is completed prior to the scheduled end date, an amendment to Notice to Navigation #12638 will be posted at

Periodic updates and construction progress will be posted to

If you have any questions, please contact Selwyn (Tyrone) Valley, Chicago Harbor lockmaster, at 312-787-4795 or; or Mike Nguyen, USACE Chicago District project manager, at 312-846-5555 or

Vanessa Villarreal
(312) 846-5331


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