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  • MKARNS Nav Notice SWL 26-10 MPLD Reopened - Width Restrictions

    Mongomery Point Lock & Dam (NM 0.5) has reopened to navigation traffic 24-hours per day. However, a 70-ft width restriction remains in place. All mariners are advised to exercise extreme caution when transiting the lock. Tows should align with the land wall when nearing the downstream approach to avoid contact with the downstream river wall miter gate. Additionally, mariners should continue to expect longer than normal lockage times. These locking instructions will remain in place until further notice.

  • MKARNS Nav Notice SWL 26-09 MPLD Partial Lock Reopening - Width Restrictions

    Due to ongoing hydraulic system repairs on the downstream river wall miter gate, Montgomery Point Lock & Dam (NM 0.5) is operating under the following restrictions until further notice: • Daily Closure: The lock will be closed to all traffic from 6 a.m. to 6 p.m. daily to allow for repair work. • Limited Opening: The lock will be available for transit from 6 p.m. to 6 a.m. daily. • Width Restriction: A 70-foot width restriction is in effect during operating hours.

  • MKARNS Nav Notice SWL 26-08 MPLD Unscheduled Closure

    Due to issues with the hydraulic system, Montgomery Point Lock and Dam (NM 0.5) is currently closed to traffic. Crews are onsite investigating the issue and will reopen the lock as soon as the repairs are completed. A subsequent Navigation Notice will be issued when the lock is reopened.

  • MKARNS Nav Notice SWL 25-72 Lock 10 Intermittent Delays

    Mariners should expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 on October 27th, 2025 – October 30th, 2025, between the hours of 6:00 a.m. and 4:30 p.m. The intermittent delays are required to facilitate concrete repairs to the lock walls.

  • MKARNS Nav Notice SWL 25-71 UPDATED Lock 10 Closure Notice

    Mariners are advised that the partial lock closure at Dardanelle Lock (No. 10) NM 205.5 has been extended through October 24th, 2025.

  • MKARNS Nav Notice SWL 20-70 UPDATED Lock 13 Closure Notice

    Update to navigation notice SWL 25-68. Mariners are advised that the partial lock closure at James W. Trimble Lock (No. 13) NM 292.8 has been extended through October 25th, 2025.

  • MKARNS Nav Notice SWL 25-69 Caution Advisory MPLD DS Approach

    Mariners are advised that significant shoaling has occurred in the downstream approach at Montgomery Point Lock and Dam (NM 0.5). Crews are onsite performing dredging and clamming operations, and the contract dredge is scheduled to arrive next week. A subsequent navigation notice will be issued once the shoaling has been cleared.

  • MKARNS Nav Notice 25-68 UPDATE: SCHEDULED LOCK 13 CLOSURE NOTICE

    Mariners are advised that the partial lock closure at James W. Trimble Lock (No. 13) NM 292.8 has been extended through October 18th, 2025. During this time, the Lock will be closed daily (Monday thru Saturday) between the hours of 7:00 a.m. and 7:00 p.m. The lock will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., and all day on Sundays, however a 70-ft width restriction will be in place.

  • MKARNS Nav Notice 25-67 MPLD Nav Pass Closed

    Due to falling river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is in operation and the navigation pass is closed. All vessels are required to pass through the lock until further notice.

  • MKARNS Nav Notice SWL 25-66 Lock 8 Tow Haulage Return to Service

    The tow haulage equipment at Toad Suck Lock (No. 8) NM 155.9 has returned to service.