MKARNS Navigation Notices

22 Jun 2026

MKARNS Nav Notice 26-22 Intermittent Delays (Clinton Presidential Park Bridge NM 118.2)

Mariners may experience intermittent delays at the Clinton Presidential Park Bridge (NM 118.2). These delays are necessary to facilitate the reconstruction of an upstream bridge pier protection cell. The contractor is expected to begin mobilizing equipment this week with construction beginning in roughly 10 days. The project is expected to take up to six months to complete.

13 Jun 2026

MKARNS Nav Notice SWL 26-21 Lock Cutoff Times for Towing Configurations

Mariners are advised that starting June 15th, 2026, and continuing until this Navigation Notice is rescinded, the following lockage cutoff times with corresponding tow configurations will be in place at Murray Lock (No. 7) NM 125.0, Toad Suck Lock (No. 8) NM 155.9, Arthur V. Ormond Lock (No. 9) NM 176.9, Dardanelle Lock (No. 10) NM 205.5, Ozark - Jeta Taylor Lock (No. 12) NM 256.8, and James W. Trimble Lock (No. 13) NM 292.8.

9 Jun 2026

MKARNS Nav Notice SWL 26-20 Caution Advisory NM 291.6 I-49 Bridge

Mariners are advised that starting June 15th, 2026, bridge construction activities will continue at NM 291.6, downstream of James W. Trimble Lock and Dam (No. 13). This work will be on the bridge pier adjacent to the navigation channel on the left descending side.