Meldahl (OR 436.2): Downstream Miter Gate and Culvert Valve repairs | Auxiliary Chamber Closure – estimated for September/November
Markland (OR 531.5): Down Stream Gate Rehab | Auxiliary Chamber – estimated for October/November
Marmet (KR 67.7): Inspection, dewatering, and misc. repairs | Main Chamber Closure
McAlpine Lock Closure (OR 606) – Beginning April 29th thru September 20th there will be intermittent daytime closures for southbound traffic from 0700 to 1900, Monday through Saturday, to facilitate work on the Portland Canal wall. Northbound traffic will be permitted to transit, provided there are no divers in the water.
Meldahl Lock (OR 436.2) –
Main chamber closure beginning the afternoon of June 13ththru September 12th for maintenance to gates and lifting mechanisms. All locking operations will utilize the Small Chamber.
Nickajack Lock Closures(TR 424.7) – Scheduled daily intermittent closures, August 11th thru September 11th, from 0600-1600 for repairs to a filling valve.
Pickwick Lock Closure (TR 206.7) – Scheduled Main Chamber closure beginning July 7th thru October 7, 2025, for work on the upper gate. The auxiliary chamber will remain open to navigation during this time.
Kentucky Lock (TR 22.3) – Congestion due to Barkley Lock Closure.
Jamie L Whitten Lock Closure (TT 411.9) – Routine maintenance closures beginning September 3rd at 0600 until October 3rd at 0600.
Chicago/Illinois/Upper Miss
Upper Miss Winter Closures:
Lock 19 (UM 364.3) will be the only lock to close from Dubuque through St. Louis. Closure will occur from December 15, 2025, to March 14, 2026, marking the first of three consecutive winter closures.
Lock 25 (UM 241.4) may experience tentative, short-duration closures (no more than 12 hours) for NESP preparatory work. Additional details will be provided as available.
ACBL will send out our official annual guidance letter regarding this matter the week of August 25th.
2026 Planned Illinois River Lock Port Closure – Closure of the Lockport Lock, River Mile 291, starting March 31st, 2026, thru May 19th, 2026.
Lower Miss/Gulf/Canals/Tenn Tom
Lower Miss Operational Impact –
Due to the current river stage and operating conditions, ACBL has implemented draft restrictions listed below.
Loading drafts were reduced to 0.05% NBD Gulf to Cairo.
Tow size has been reduced pending horsepower classification by 9%-14% (4-5 barges)
Normal Water Stages:
Caruthersville to Memphis (LM 869- 725): 20′ – 5′
Memphis to Vicksburg (LM 725 – 439): 40′ – 20′
Vicksburg to Natchez (LM 439- 303): 30′ – 10′
Low Water Stages:
Caruthersville to Memphis (LM 869- 725): Below 5′
Memphis to Vicksburg (LM 725 – 439): Below 20′
Vicksburg to Natchez (LM 439- 303): Below 10′
For current river stage information, please refer to the links at the bottom of this page.
Dardanelle Lock 10 (AK 205.5) – Scheduled daily closures with 70′ width restrictions from 0700-1900 beginning June 15th thru September 30th for construction.
James W. Trimble Lock (AK 292.8) – Scheduled daily closures with 70′ width restrictions from 0700-1900 beginning June 15th thru September 30th for construction.
Bayou Sorrel Lock Closures (PA 36.7) – Intermittent closures for scheduled repairs are beginning July 21st thru September 11th, Monday thru Thursday, 0630-1800.
Victoria Bend Revetment (LM 594) – Daily intermittent closures beginning August 1st thru August 25th, 0700-1900, to perform bank stabilization.
Baton Rouge Dredging (LM 226-223) – Dredge Hurley will begin operations within the Upper Baton Rouge Bridge area on July 20th. Daylight restrictions to begin the evening of July 17th for any tows over 105′ wide.
Algiers Lock (LM 88) –
Intermittent closures from 0700 to 1800, Monday thru Saturday, July 21st thru September 6th to complete the river end guidewall and dolphin construction.
August 25th 03:00: Passed 16 tows in the last 24 hours, which averaged 1.2 hours of delay. LPMS shows 1 tow waiting, which has an average of 12.0 hours of delay.
Morgan City Dredging (AT 117) – Dredge Robert White began working in the Morgan City Area on August 18th.
Algiers Canal Closures (AC 3.8) –
Old Hwy 23 Lift Bridge/Belle Chasse Bridge will undergo daily channel closures from Monday to Saturday, between May 19th and October 25th, from 0600 to 1430, due to the second phase of the remaining bridge structure demolition.
Judge Seeber Bridge/Clairborne Ave Bridge Closures (EC007) – Only open for marine traffic from 2200-0500 daily beginning August 22nd. Repairs scheduled for August 29th and 30th, closures will occur, more info to come.
Colorado River Locks (WC 440) – The East and West locks will have daytime restrictions Monday through Friday, January 29th thru August 29th.
Bayou Boeuf Lock (WC 93.3) – Repairs are scheduled beginning July 14th, Monday thru Friday, 0700–1730, are expected to last thru September 2025. Bayou Chene is available as an alternate route.
