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  • 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. 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 23-59 Caution Advisory - Intermittent Channel Closures near I-30 Bridge NM 118.5

    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 October 5 – 7, 2023. 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.
  • 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 23-53

    A Military River Crossing Exercise is scheduled to occur September 9 through September 15, 2023, between NM 289.0 and NM 292.8 (James W. Trimble Lock & Dam, No. 13). The exercise is scheduled to take place daily between the hours of 6:00 a.m. and 10:00 p.m. Mariners are advised to use extreme caution when transiting the area. Mariners could also experience intermittent delays during this time.
  • MKARNS NAVIGATION NOTICE - SWL 23-52

    Mariners should expect to experience intermittent delays at Norrell Lock (No. 1) NM 10.3 and Lock No. 2 NM 13.3 between the hours of 7:00 a.m. and 5:30 p.m. on September 14 through September 24, 2023. The intermittent delays are required to facilitate underwater dive operations in the Lock chambers.
  • MKARNS NAVIGATION NOTICE - SWL 23-46

    James W. Trimble Lock (No. 13) NM 292.8 has reopened to navigation traffic.