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  • MKARNS Nav Notice SWL 26-19 Lock 10 Intermittent Delays

    Mariners may expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 on June 9th, 2026 – June 11th, 2026. Intermittent delays are required to perform a survey of the lock chamber.

  • Single lane closure scheduled for Highway 63/79 bridge over Sanders Lock and Dam

    The U.S. Army Corps of Engineers will be closing one lane of the Highway 63/79 bridge across Sanders Lock and Dam, from 8 a.m. until 5 p.m. May 21 for a routine bridge inspection.

  • Partial lane closure underway on County Road 96 bridge in Tichnor

    The U.S. Army Corps of Engineers Little Rock District has implemented a partial lane closure on the County Road 96 bridge in Tichnor, Arkansas which crosses Lock 2 on the McClellan-Kerr Arkansas River Navigation System.

  • MKARNS Nav Notice SWL 26-18 Lock 07 and 08 Intermittent Delays

    Mariners may experience intermittent delays at Murray Lock (No. 7) NM 125.4 and Toad Suck Lock (No. 8) NM 155.9 on May 4th, 2026 through June 15th, 2026, between the hours of 7:00 a.m. and 5:30 p.m. daily. The intermittent delays are required to facilitate dredging and dive inspections in preparation of the 110’ stoplog conversions

  • USACE opens public comment period for draft Lake Dardanelle Shoreline Management Plan on Monday, May 4

    The U.S. Army Corps of Engineers, Russellville Site Office is seeking public input on the draft Lake Dardanelle Shoreline Management Plan and associated Environmental Assessment. Public comment for the draft SMP and EA will be held between May 4 and June 3, 2026.

  • MKARNS Nav Notice SWL 26-17 Scheduled Lock Closure (Multiple Locations)

    A partial lock closure is scheduled for James A. Trimble Lock (No.13) NM 292.8, Ozark Jetta-Tayor Lock (No. 12) NM 256.9, Dardanelle Lock (No. 10) NM 205.5, Arthur V. Ormond Lock (No. 9) NM 176.9, Toad Suck Lock (No. 8) NM 155.9, and Murray Lock (No. 7) NM 125.4 beginning June 15th, 2026, through September 30th, 2026. During this time, the Locks will be closed daily between the hours of 7:00 a.m. and 7:00 p.m. The Locks will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., however a 70-ft width restriction will be in place.

  • MKARNS Nav Notice SWL 26-16 Caution Advisory NM 291.6 I-49 Bridge

    Mariners are advised that bridge construction falsework is located in the river at NM 291.6, downstream of James W. Trimble Lock and Dam (No. 13). These obstructions will be in place intermittently during the I-49 Bridge construction and may be submerged depending on river conditions.

  • USACE issues small craft advisory for Arkansas River

    The U.S. Army Corps of Engineers is issuing a small craft advisory for the McClellan-Kerr Arkansas River Navigation System in Arkansas. Heavy rainfall in eastern Oklahoma last week has resulted in Arkansas River flows exceeding 70,000 cubic feet per second at Trimble Lock and Dam.

  • MKARNS NAVNOT 26-15 Lock 9 Repair Closure

    Mariners are advised that Arthur V. Ormond (No. 9) NM 176.9 will be closed to traffic beginning at 6:00 a.m. until 6:00 p.m. on April 21st, 2026. The lock closure is required to facilitate ongoing work on the miter gate operational equipment.

  • USACE introduces QR Code payment system for activity passes along the Arkansas River

    The U.S. Army Corps of Engineers Russellville Site Office has launched a QR code payment system to give visitors a faster, more convenient way to purchase activity passes at USACE-managed campgrounds along the McClellan-Kerr Arkansas River Navigation System.