Chicago Lock Closures
- chicagoharborsafety
- Oct 1
- 1 min read
The US Army Corps of Engineers Notice to Navigation Interests - 9/30/2025 - Lock Closure Chicago Harbor Lock. Please see the attached document for specific information on timing and also point of contact details.
1. Chicago Harbor Lock will be closed to all traffic on Monday November 3, 2025 through Thursday November 6, 2025 starting at 0600 hours and ending at 1800 each day.
2. The purpose of the closure is to replace the hinge pins on all four sector gates.
3. The following link provides access to all USACE Notices to Navigation Interests: https://ndc.ops.usace.army.mil/ords/f?p=107:1::::::
4. If you have any questions/comments/concerns regarding this Notice to Navigation Interests, please contact Michael Walsh, USACE Chicago District Waterways Project Office Operations Manager at 815-510-0361 or by email at Michael.J.Walsh@usace.army.mil