![]() Johnson Brothers placed the final shell in February 2020 using a lift-in technique. The project delivery team explained that construction of the downstream cofferdam has employed innovative and successful construction techniques that the team believes have not been employed anywhere else in the world.īarney Schulte, the project’s lead engineer, talked about innovative placement of 10 concrete shells for the downstream cofferdam, which also forms part of the new lock wall. The general, who manages civil works projects across the nation, asked questions and took notes, and expressed interest in innovative work that could be shared across the Corps of Engineers enterprise. ![]() “The team has successfully avoided a significant amount of the time and cost impacts associated with the project schedule through the phased turnover of the cofferdam and other initiatives that have allowed both contractors to continue progressing their work,” Manning explained. They are currently on track to complete major construction efforts on the cofferdam in March 2021 and hand over the work area to Heeter Geotechnical Construction, which is already progressing on the $58 million downstream excavation contract but is waiting for the cofferdam to be completed to be able to excavate materials near the cofferdam in the dry. The Corps of Engineers’ partner on the downstream cofferdam contract, Johnson Brothers Construction, has continued to aggressively progress the $68 million project despite these challenges. Manning said that challenging river conditions in 20 resulted in delays to construction progress of the cofferdam resulting in about one year of schedule growth. Graham about project delays and the way forward to progress construction of the new 110-foot by 1,200-foot navigation lock at the Tennessee Valley Authority project. Project Manager Don Getty and Jeremiah Manning, resident engineer, briefed Maj. Army Corps of Engineers’ commanding general for Civil and Emergency Operations visited the Kentucky Lock Addition Project Wednesday for a status update and rundown of challenges the project delivery team has faced, especially with high water impacts.
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