U.S. Gulf:
Port Allen Lock guidewall damage continued to necessitate towing restrictions through the structure. The use of an assist vessel use was mandatory on all westbound tows totaling two barges or more, while eastbound vessels were required to utilize assistance on tows longer than 650 feet. Most Port Allen Lock delays were reported at 4-7 hours over the July 19-20 period.
Algiers Lock restrictions also remained in place. Tows greater than 60 feet wide and lacking in trip assistance were capped at 600 feet of total length, while tows measuring under 60 feet wide were allowed lengths up to 700 feet. The confines effectively limited unassisted crossings to four standard barges or two 30,000 mt tankers, although larger tows remained possible with the use of an assist vessel. Wait times climbed to six hours for the week.
Overnight travel restrictions remained in place through Bayou Chene due to ongoing construction and dive operations. Navigation was unavailable nightly between 7:00 p.m. to 7:00 a.m., triggering delays up to 12 hours. In addition, the use of an assist boat was reported to be mandatory on all trips through the area.
Industrial Lock delays, typically quoted in the 4-12 hour range, were interspersed with sporadic 18-30 hour stops for the week, Corps data indicated. Intermittent waits were heard up to 18 hours through the Brazos Lock east gate, while delays were pegged at 5-11 hours through the site’s west gate.
Mississippi River:
Elevated water levels continued to slow travel between St. Louis and Cairo, Ill., sources indicated, extending daylight-only movements through the bridge at Thebes, Ill., on a case-by-case basis.
Daytime shutdowns were noted at Mile 933 on the lower Mississippi River due to a rock-laying operation. The project was expected to block trips through the area between 6:00 a.m. and 6:00 p.m. daily. The project was expected to run through July 27.
Lock 27 navigation stoppages through the secondary chamber were projected to continue through July 27 due to lower bullnose repair. Work is set to move to the site’s upper bullnose on Aug. 2, blocking access to the primary chamber through an estimated Aug. 19, with delays expected. Lock 27 wait times were posted up to six hours on July 21.
Miter gate installation continued to be anticipated at Lock 2 in July. The effort was likely to result in daily 4-12 hour shutdowns while work is underway.
Five-hour delays were reported at Lock 12, while Lock 22 wait times were quoted in the 5-11 hour range for the week. Boats passing Mel Price Lock and Dam were noted waiting up to 6.5 hours.
Illinois River:
Wickets remained down at Peoria Lock and LaGrange Lock for the week, allowing boats to transit without locking.
Ohio River:
The upper chamber at McAlpine Lock was reportedly closed to navigation for dredging and repair activities. Traffic was noted passing through the lower chamber, with delays reported up to 18 hours during the week.
The Cannelton Lock main chamber is shut through Nov. 19 for repairs and maintenance, prompting detours through the site’s secondary chamber.
The auxiliary lock chamber at Markland Lock remains unavailable for use through an estimated Oct. 29 due to structural cracks in the miter gate, confining all traffic to the primary chamber. Travel through the secondary unit has been unavailable since early 2020.
The Montgomery Lock main chamber is due to shut on July 26 for repairs and maintenance, triggering detours via the secondary chamber through an estimated Aug. 24. Delays are anticipated. An additional main chamber closure scheduled for Oct. 18 to Dec. 17 is also projected to trigger delays.
The primary chamber at Braddock Lock is scheduled to go offline from Sept. 13 through Oct. 15. Lock operators will route traffic through the auxiliary chamber while work is underway. Navigation will also be shuttered through the Willow Lock main chamber on Oct. 1-31.
On the Tennessee River, Kentucky Lock delays were reported in the 6-15 hour range for the week.
The Cumberland River’s Cheatham Lock returned from bio-acoustic fish fence (BAFF) repairs at approximately 5:00 p.m. on July 15, ahead of the scheduled July 22 end date. Sources noted an additional five-hour shutdown of the site on July 19.
Arkansas River:
Dewatering and repairs are scheduled at David D. Terry Lock on Aug. 27 and Sept. 9, completely blocking navigation through the area. Intermittent shutdowns are anticipated ahead of the full shutdown during the Aug. 16-26 period.
