1. All navigation interests are advised that the 600 foot auxiliary chamber at Locks 27 will be closed effective today due to issues with concrete in the liftgate slots. We have been advised that the concrete in the liftgate slots on the auxiliary lock may not be suitable to hold pool above 408 NGVD (roughly 15 on the St. Louis gage). The district is working to correct this situation.
2. All navigation interests should be alert for, and abide by, any special instructions that may be issued by the lockmaster.
FOR THE DISTRICT ENGINEER:
Andrew C. Schimpf, P.E.
Rivers Project Manager