![Construction at Lock and Dam 25 will result in a new 1,200- foot by 110-foot lock chamber being built adjacent to the existing 600-foot chamber. [USACE photograph]](https://www.marinelog.com/wp-content/uploads/2025/05/Mississippi_River_Lock_and_Dam_number_25_large-300x225.jpg)
Corps preps for construction of new lock chamber at L&D 25
The St. Louis Engineer District’s Rivers Project Office will close the Winfield (Mo.) Recreation Area to allow for contractor equipment and material staging associated with two active construction projects at Lock and