Dredge J.S. CHATRY wraps up work in the Mississippi River

Weeks Marine’s cutterhead dredge J.S. CHATRY has completed the augmentation of the underwater sill in the Mississippi River.

According to Army Corps New Orleans District, the sill which is now -30 feet below water, has been operationally complete.

The sill, first completed in July 2023, was constructed to an elevation of -55 feet to slow progression of salt water upstream.

The J.S. CHATRY began sill augmentation September 24, 2023, building up the current sill from its initial depth of -55 feet to -30 feet, while leaving a 620-foot-wide navigation channel open for passage of deep-water vessels.