Sacramento Weir expansion hits delay after unstable soil discovered

The Sacramento Weir expansion, a $1.6 billion flood-control project designed to protect Sacramento from catastrophic flooding, has encountered unexpected soil problems. Crews discovered unstable ground beneath part of the structure, causing sinking that could delay completion. The U.S. Army Corps of Engineers says safety remains the top priority and is analyzing the issue, with results expected by the end of the month. The project, which began in 2023, nearly doubles the weir’s size to divert water into the Yolo Bypass and strengthen flood protection for one of the nation’s most at-risk cities.