Navigation Notice: Illinois River

Chicago Harbor Lock and Dam



EFFECTIVE: 03/08/2022 10:00 thru 03/10/2022 16:00 CST


  1. The Chicago Harbor Lock will be closed to all vessel traffic between 1000 CST to 1500 CST on Tuesday, March 8th, 2022 for a multi-beam survey of the lock chamber and between 0800 CST and 1600 CST on Thursday, March 10th, 2022 for a dive inspection of the lock chamber. The purpose of these two activities is for the preparation of the Chicago Harbor Lock Chamber Floor and Wall Repair [W912P6-21-C-0020].


  1. In the event that the inspections are completed prior to the scheduled end date, an amendment to this Notice to Navigation Interests will be posted as soon as the inspections have been completed.


  1. The following link provides access to:

All USACE Notices to Navigation Interests


  1. If you have any questions/comments/concerns regarding this Notice to Navigation Interests, please Contact Michael Walsh, USACE Chicago District Waterway Project Office Chief, (815) 510-0361 or .




William P. Mazzeno, PMP
Chief, Operations and Regulatory Division