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  • NAVIGATION NOTICE: SWL 23-56 - McClellan-Kerr Arkansas River Navigation System

    Mariners are advised that crews will be placing rip rap around the Van Buren Railroad Bridge (NM 300.8).  Work will be performed daily from 6 a.m. to 6 p.m., September 25 through October 4, 2023.  Mariners may contact the onsite workboat, M/V Pine Bluff, on VHF-FM channel 16 or 78 or by phone at (318) 452-5448.  Mariners are advised to transit the area with caution.
  • Navigation Notice: SWL 23-55 McClellan-Kerr Arkansas River Navigation System

    Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the short wall in the downstream approach at Montgomery Point Lock and Dam (NM 0.5). Also, a 70-ft width restriction is in place to reduce the risk of grounding in the area. Crews are being dispatched to perform digging and clamming operations in the reach. A subsequent navigation notice will be issued once the shoaling has been cleared and the 70-ft width restriction has been lifted.
  • MKARNS Navigation Notice - SWL-23-48

    INCREASED DIFFERENTIALS ON THE WHITE RIVER ENTRANCE CHANNEL
  • MKARNS NAVIGATION NOTICE - SWL 23-46

    James W. Trimble Lock (No. 13) NM 292.8 has reopened to navigation traffic.
  • MKARNS NAVIGATION NOTICE - SWL 23-45

    Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open. When the Montgomery Point Lock and Dam tailwater elevation drops below 115 ft., the navigation pass will be closed.
  • MKARNS NAVIGATION NOTICE - SWL 23-44

    Mariners are advised that the navigation channel may experience intermittent closures under the I-30 Bridge, NM 118.5. The channel in this area could experience intermittent closures for a duration of up to 30 minutes at a time between 6 a.m. and 5 p.m on August 28 – 31 and again on September 20 – 23. The intermittent channel closures are due to steel erection operations for the new bridge. Mariners may contact the onsite workboat M/V Bill O’Donley on VHF Channel 16 or 68 for updates.
  • MKARNS NAVIGATION NOTICE - SWL 23-43

    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 NAVIGATION NOTICE - SWL 23-42

    The Joe Hardin Lock (No. 3) NM 50.2 closure detail that was previously noted in Nav Notice SWL 23-28 has been revised. The lock will now be closed to traffic beginning at 7 a.m. on September 11, 2023, until 7 p.m. on September 15, 2023. This is to allow workers to upgrade the lock interlock system which is an integral safety function of the Lock.
  • MKARNS NAVIGATION NOTICE - SWL 23-41

    James W. Trimble Lock (No. 13) NM 292.8 will be closed to traffic beginning at 6 a.m. on August 8, 2023, until 6 p.m. on August 9, 2023. This is to allow workers to make repairs to the downstream land wall tainter valve piping.
  • MKARNS Navigation Notice - SWL-23-39

    SPECIAL LOCKING INSTRUCTIONS COLONEL CHARLES D. MAYNARD LOCK (No. 5) NM 86.3 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM