U.S. Gulf:
Tropical Storm Claudette made landfall in Louisiana on June 19 after strengthening from a tropical disturbance earlier that day. Claudette promptly turned toward the Northeast, slogging through Mississippi, Alabama, Georgia, and the Carolinas. Claudette’s remnants strengthened into a tropical storm again on June 21 before pushing into the Atlantic, threatening to disrupt shipping lanes along the Eastern Seaboard.
Inclement weather left over from Claudette continued to disrupt navigation in the Gulf and Canals on June 22-26, sources indicated. A tropical disturbance located north of the South American country of Guyana on June 24 was unlikely to strengthen into a named storm prior to June 26, the National Hurricane Center (NHC) reported.
Damage to the Port Allen Lock guidewall continued to demand towing restrictions through the site. Assist vessel use was mandatory on all westbound tows of two barges or more, while eastbound boats required assist boat accompaniment on tows longer than 650 feet. Most Port Allen Lock delays fell in the 6-9 hour range for the week, although intermittent waits stretched to 14-16 hours.
Algiers Lock restrictions continued for the week. Caps on both vessel lengths and widths limited tows lacking in trip assistance to four standard barges or two 30,000 mt tankers, although larger tows were possible with the use of an assist vessel. The resumption of navigation through the Port Allen Route allowed most Algiers Lock delays to fall below the five-hour mark for the week.
Overnight travel restrictions persisted through Bayou Chene due to construction and diver operations sources said. Movement through the waterway was reportedly unavailable nightly from 7:00 p.m. to 7:00 a.m., triggering 6-12 hour delays. The use of an assist boat was required on all movements through the area.
Intermittent Brazos Lock delays were noted in a wide 13-30 hour range for the week.
Mississippi River:
Dredging operations previously reported at Mile 757 on the upper Mississippi River were heard to conclude during the week. The dredge had been blamed for slow navigation during daylight hours.
Ongoing repairs to the Burlington Railroad Bridge necessitated that shippers provide advance notice of one hour prior to traveling through the area. The requirement was in place daily from 7:30 a.m. to 4:30 p.m., and was expected to run into late June.
A miter gate installation project remained on the books at Lock 2 for July, sources reported. The operation was likely to result in daily 4-12 hour shutdowns for most of the month. Navigation stoppages are also projected in July and August at Lock 25 due to planned repairs to the lower guidewall. Sources anticipated lock availability to be limited from 6:00 a.m. to 6:00 p.m. daily.
Lock 10 delays were noted in the 3-7 hour range, while 4-6 hour waits were posted at Lock 13. Delays ran as high as seven hours at Lock 14, and boats passing Lock 20 were held up to eight hours, according to Corps documents. Lock 22 passages were clocked up to nine hours, while five-hour crossings were noted through Mel Price Lock and Dam.
Illinois River:
Marseilles Lock waits were noted up to six hours for the week. Raised wickets at Peoria Lock and LaGrange Lock produced sporadic wait times up to six hours at both sites.
Ohio River:
The Meldahl Lock primary chamber was shut for miter gate repairs and maintenance through June 29, pushing delays to 13 hours. Tows were reported detouring through the site’s 600-foot auxiliary chamber, with delays anticipated for the remainder of the project. Intermittent shutdowns of the auxiliary chamber were also noted.
The Markland Lock secondary chamber is shut to navigation through an estimated Oct. 29 due to structural cracks in the miter gate, forcing traffic through the site’s primary chamber. Travel through the secondary unit has been unavailable since early 2020.
The Cannelton Lock main chamber was reportedly shut on June 21 for repairs and maintenance. Traffic has passed through the site’s smaller secondary chamber with minimal delays reported on June 23, although some expected a slow ramp-up in wait times through the project’s scheduled Nov. 19 end date.
The primary chamber at Montgomery Lock is slated to close from July 26 through Aug. 24 for repairs, prompting lock operators to route vessels through the secondary chamber. One additional main chamber outage is scheduled at the site in 2021, running from Oct. 18 to Dec. 17.
The Braddock Lock main lock chamber is set to shut from Sept. 13 through Oct. 15, forcing a detour through the auxiliary chamber. Navigation will be unavailable through the Willow Lock main chamber on Oct. 1-31, sources reported.
Falling water levels prompted lock operators to raise wickets at Olmsted Locks and Dam, ending a period of lockless navigation. Intermittent 10-hour delays were noted through Greenup Lock.
On the Tennessee River, Wilson Lock was scheduled to close to daytime navigation from June 28 to July 1 for inspections, blocking movements between 6:00 a.m. and 4:00 p.m. Kentucky Lock delays were quoted in a wide 7-23 hour range for the week.
The Cumberland River’s Cheatham Lock was closed on June 14-24 for bio-acoustic fish fence (BAFF) repairs. The lock was expected to reopen for three days to clear traffic before shutting down twice more, from June 28 to July 1 and again on July 12-22.
Arkansas River:
Eased tow restrictions were noted on the Arkansas River due to normalizing water levels. Maximum towing capacity was previously slashed by 25-50 percent below the region’s typical 12-barge limits.
A dewatering and repair operation remains on the books at David D. Terry Lock for the third quarter, and is expected to fully block navigation between Aug. 27 and Sept. 9. Intermittent navigation outages were projected through the site ahead of the full shutdown, during the Aug. 16-26 period.
