US Gulf:
The Corps announced plans to shut Port Allen Lock for 48 hours in the first half of July for dredging, sources said, although no firm dates were reported. Reverse head conditions kept Harvey Lock closed to navigation for the week. Transit through the site has been unavailable since June 15.
Intermittent travel outages noted between 7:00 a.m. and 7:00 p.m. at the Port Allen Route’s BNSF railroad bridge, located at Mile 1 of the Port Allen Route, were set to conclude on July 6. The shutdowns are scheduled to resume July 17 through Aug. 14.
Work at Colorado Lock, previously slated to wrap up on June 23, was extended through July 14. Waits were posted up to 14 hours during the week, down from 33 hours in the prior report.
Guidewall repairs begun on June 26 at Bayou Sorrel Lock restricted navigation between 7:00 a.m. and 4:00 p.m. daily, prompting 11-hour delays. The project is anticipated to run through March 2024. Chamber wall repairs at Leland Bowman Lock were pushed back to July 10-23 from June 30-July 14, sources said.
Intermittent seven-hour waits were described at Port Allen Lock during the week, while Industrial Lock delays were counted up to 14 hours. Sources noted Algiers Lock wait times as high as nine hours. Brazos Lock passages averaged 4-7 hours.
Mississippi River:
Sources reported ongoing towing restrictions on the Mississippi River due to low water levels.
Loading drafts were reduced by 5-10% on the upper river, while drafts were cut by 25% for southbound movements loading at St. Louis. Barges loading at Cairo and traveling downriver saw drafts reduced by 15%, and draft limits were slashed by 20% on northbound tows destined for Cairo or below.
Southbound tows also saw barge counts reduced by 15-25%, delaying arrivals by 24-48 hours. Sources noted a temporary bump in loading drafts in the St. Louis area during the week, but expected the increase to be short-lived.
The St. Louis river gauge, posted at 2.1 feet on July 5, was predicted to decline to (-)3.40 feet on Aug. 2. On the lower river, the Memphis gauge moved above the (-)5.0-foot low stage to (-)2.08 feet on July 5. Following a rise to 3.2 feet on July 8-9, Memphis was forecast to return to low stage on July 18.
Dredging previously reported at Mile 608 moved to Mile 525 during the week, sources said. Rolling 24-hour shutdowns were expected at the site for approximately one week. Work at Old River Lock will halt navigation on July 31-Aug. 3, Aug. 14-17, and Aug. 21-24.
Revetment efforts scheduled through mid-July at the lower river’s Mile 933 were expected to limit southbound navigation from 7:00 a.m. to 6:00 p.m. Delays were noted in a 12-18 hour range on July 5.
Illinois River:
Brandon Road Lock, Dresden Island Lock, and Marseilles Lock are closed to navigation through approximately Oct. 1 for maintenance and repairs, closing the river to commercial navigation. Starved Rock Lock is slated to shut on July 11-14 for miter gate work.
Loading drafts were reduced by 5-10% on the Illinois River due to low water levels, sources said. Because of the conditions, wickets were kept in the raised position at Peoria Lock and LaGrange Lock for the week.
Ohio River:
Draft limits were reported at 10-10.5 feet on the Ohio River due to low water levels.
Repairs to the John T. Meyers Lock floating mooring system were scheduled to continue through Aug. 20, necessitating a shutdown of the main chamber. The secondary chamber will close Aug. 21 through Sept. 10 for miter gate repairs, followed by an additional main chamber closure running Sept. 11 through Nov. 17.
The McAlpine Lock auxiliary chamber is closed through Aug. 18, sources said. The secondary chamber at Melville Lock is shut for maintenance and repairs until Aug. 4.
Vessels were required to utilize an assist boat on southbound movements through Smithland Lock due to strong outflows. The land chamber at Smithland is scheduled to close Sept. 22 through Oct. 21 for machinery repairs, followed by a shutdown of the river chamber on Oct. 22-Nov. 20 for machinery replacement.
The Greenup Lock primary chamber closed to navigation on July 5 for planned maintenance, prompting auxiliary chamber detours through Aug. 14. Winfield Lock repairs scheduled July 10 through Sept. 15 are unlikely to trigger lengthy wait times, sources said.
Waits were quoted up to 15 hours at the Tennessee River’s Kentucky Lock during the week. Corps data showed intermittent 6-14 hour delays at Wilson Lock. On the Monongahela River, maximum drafts were reduced to 8.5 feet due to low water levels.