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  • MKARNS Nav Notice No. SWL 23-70 MPLD Unscheduled Closure

    Montgomery Point Lock and Dam (NM 0.5) will be closed to traffic for 24 hours from 12:00 p.m. on November 1, 2023 to 12:00 p.m. on November 2, 2023. The closure will allow workers to make repairs to the downstream land wall miter gate cylinder.

  • MKARNS Nav Notice No. SWL 23-69 UPDATE 2: White River Entrance Channel

    All traffic on the locking queue at Montgomery Point Lock & Dam (NM 0.5) has been cleared and normal locking procedures have begun. However, dredging operations downstream of the Montgomery Point Lock & Dam (NM 0.5) are ongoing.

  • MKARNS Nav Notice No. SWL 23-68 UPDATE: White River Entrance Channel

    Dredging operations are progressing downstream of Montgomery Point Lock & Dam (NM 0.5). The Dredge Sandpiper is currently dredging in the downstream approach to the lock with plans to continue in this area until the morning of Thursday, October 26, 2023.

  • MKARNS Nav Notice No. SWL 23-67 Lock 3 Reopened

    The hydraulic system at Joe Hardin Lock (No. 3) NM 50.2 has been repaired and is back in service. The Lock is reopened to navigation traffic.

  • MKARNS Nav Notice No. SWL 23-66 Lock 3 Unscheduled Closure

    The Joe Hardin Lock (No. 3) NM 50.2 is experiencing issues with the hydraulic system and is temporarily closed to traffic. Crews are onsite and will have the Lock reopened as soon as the problem can be resolved. A subsequent Navigation Notice will be issued once the Lock has been opened to traffic.

  • MKARNS Nav Notice No. SWL 23-64 UPDATE: WREC Channel Restriction and Delays

    Crews arrived in the area on Sunday, October 15, 2023, to begin clamming in the downstream approach at Montgomery Point Lock & Dam (NM 0.5). A Notice to Proceed has been given to the Contract Dredge Sandpiper who is expected to arrive in the area and begin dredging on or before Saturday, October 21, 2023. The Dredge Sandpiper is expected to complete dredging operations below Montgomery Point Lock & Dam on or around Saturday, October 28, 2023.

  • MKARNS Nav Notice No. SWL 23-63 WREC Channel Restriction and Delays

    Mariners are advised that extremely low Mississippi River levels have caused depth issues to exist between Montgomery Point Lock and Dam (NM 0.5) and the Mississippi River.

  • MKARNS Nav Notice No. 23-62 - TOW HAULAGE OUT OF SERVICE DAVID D. TERRY LOCK (No. 6) NM 108.1

    The tow haulage equipment at David D. Terry Lock (No. 6) NM 108.1 is currently out of service. Double cut tows will have to be locked the conventional way (without the use of tow haulage). Another notice will be distributed when the tow haulage equipment is back in service.

  • MKARNS Nav Notice No. SWL 23-61 Lock 10 Intermittent Delays

    Mariners should expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 between the hours of 7:00 a.m. and 5:30 p.m on October 19, 2023. The intermittent delays are required to facilitate underwater dive operations in the Lock chamber.

  • MKARNS Nav Notice No. SWL 23-60 Caution Advisory - Channel Closures at I-30 Bridge NM 118.5

    Mariners are advised that the navigation channel under the I-30 Bridge, NM 118.5 will be closed from 5 a.m. to 8 p.m on October 30 through November 4, 2023, each day. The channel closures are due to steel erection operations for the new bridge construction. No vessels will be allowed to transit the area during this time. Mariners may contact the onsite workboat M/V Bill O’Donley on VHF Channel 16 or 68 for updates.