Navigation Notice 206855 Transit Advisory Lock and Dam 24

Subject Navigation Notice is published to the NTNI website and attached for reference.

Lock and Dam 24
Upper Mississippi River mile 273.4

1. Due to critical construction activities on the dam, Lock and Dam 24 is experiencing stronger than normal outdraft conditions on the lower end of the lock. It is recommended that Mariners take necessary precautions when transiting this area. The work is estimated to take 6 months to complete. We will continue to advise RIAC on these conditions.

2. All navigation interest should be alert for, and abide by, any special instructions that may be issued by the Lockmaster.


Andrew C. Schimpf, P.E.,
Rivers Project Manager