Smithland Lock Closure (OR 918.5) – There will electrical testing from May 26th thru June 5th. There will be a Full closure of both chambers from May 27th thru May 29th from 0700-1700 each day.
Cannelton Lock Closure (OR 720.7) – Primary chamber closure from May 11th thru May 14th from 0600-1800 for electrical breaker tests.
Montgomery Lock Closures (OR 31.7) – 24-hour closures, beginning at 0700, are scheduled on the following dates in support of ongoing contractor work:
May: 14th, 18th, 21st, 27th, 30th
June: 2nd, 8th, 11th, 15th, 18th
Emsworth Lock Closures (OR 6.2) – Beginning April 27th thru Sept. 4th, the auxiliary chamber will be closed daily from 0600 to 2359, and the primary chamber will have intermittent closures for filling valve maintenance. Primary chamber tow restriction: max tow width of 78 feet.
Kentucky Lock (TR 22.3) – Lock Closure June 15th thru June 29th to facilitate miter gate gearbox replacement. Vessels may use Barkley Lock and the Barkley Canal as alternate route.
Chicago/Illinois/Upper Miss
2026 Planned Illinois River Lockport Closure – Closure of the Lockport Lock, River Mile 291, starting March 31st, 2026, thru May 19th, 2026. Click here for our full guidance.
Illinois River Lockport Re-Opening – ACBL has distributed our annual guidance for accepting release dates above Lockport Lock. Click here for our full guidance.
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 are not currently reduced 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.
Harvey Canal (LM 98.3) – A 24/7 closure will begin on May 4th for municipal waterline repairs; estimated to complete on May 11th.
Glover Wilkins Lock Closure (TTW 376.3) – Scheduled 30-day closure for routine maintenance will occur from September 9th thru October 10th.
Thad Cochran Lock Closure (TTW 371.1) – Scheduled 30-day closure for routine maintenance will occur from September 10th thru October 10th.
Algiers Lock Closures (LM 88) – Scheduled daytime closures beginning May 4th thru May 6th, 0700-1830, to perform emergency repairs on the canal end dolphin.
Bayou Sorrel Lock (PA 36.7) – Daytime closures scheduled Monday–Friday, May 18th thru approx. June 19th, for guide wall work have been delayed until May 26th.
Colorado River Locks Closures (WC 441.5) – Daytime closures scheduled May 12th thru May 24th, 0700-1900, for sand and silt removal from sector gate recesses.
Brazos Lock Closure (WC 401) – As of April 1st, closures are scheduled through June 26th, Monday-Friday, between 1900 and 0700, to allow for repair work.
Calcasieu Lock North Chamber Wall Replacement (WC 238) – Beginning May 18th through approx. September 18th, the Calcasieu Lock will have daytime closures Monday through Friday from 0700-1900 for major repairs to the north chamber wall. The maritime industry anticipates these closures will result in significant delays of 3-5 days. ACBL will continue to monitor the situation closely and will provide updates and additional information as it becomes available.
Inner Harbor Navigation Canal Lock (Industrial Canal Lock EC 1) – Daytime closures from 6:30 AM to 5:00 PM, Monday through Friday, will resume on April 13th thru approx. May 1st for reiver end guide-wall work.
Calcasieu Lock North Chamber Wall Replacement (WC 238) – Beginning May 18th thru Oct. 31st, the Calcasieu Lock will have daytime closures Monday thru Friday for repairs.
