CoastalUS Coast Guard LNM - Northwest District (D13)MessagesLNM13-6F23E4LNM13-6F23E4Received: 7 Oct 2026, 00:00Updated: 4 Nov 2026, 18:24SubscribeCopyShareShow on mapPrintExportSearchMessage contentNORTH CHANNEL General / Bridges Multiple lights are extinguished. Position 46-12.92N 123-51.72W USCG Northwest District Local Notice to Mariners 44/2026Location mapOpen on the full mapMore from US Coast Guard LNM - Northwest District (D13)LNM13-64DB8A2026-11-04CRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging HME will be performing dredging operations near Port of Longview on the Columbia River (RM 65+52 throuLNM13-FA9A462026-11-04CRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Slaughter Bar/Lower DobeLNM13-6DD3402026-11-04MILLER SANDS - PILLAR ROCK General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Pillar Rock/Brookfield-Welch IslanLNM13-43667B2026-10-28archivedLAKE WASHINGTON General / Bridges WASHINGTON – LAKE WASHINGTON SHIP CANAL – LAKE WASHINGTON – Bridge Inspection Washington State Department of Transportation and Fickett Structural Solutions will be pLNM13-45312C2026-09-30archivedUNION BAY REACH - LAKE WASHINGTON General / Bridges / Temp Deviation WASHINGTON – LAKE WASHINGTON SHIP CANAL – Montlake Bridge deviation notice The Coast Guard has approved a temporary deviation fromLater warningsLNM13-6FC4F12026-10-07SOUTH WILLAPA BAY - NAHCOTTA CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Tokeland Dredging will be conducting dredging and disposal opeLNM13-EA7E732026-10-07LAKE WALLULA - SNAKE RIVER General / Miscellaneous The USACE Walla Walla District has scheduled the annual navigation lock maintenance closure for 2026. DuringLNM13-4CD97A2026-10-28archivedTANSY POINT - ASTORIA General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS will be conducting dredging activities near Tongue Point CroEarlier warningsLNM13-5D63EB2026-10-07SHILSHOLE BAY - SALMONBAY General / Miscellaneous The Hiram M. Chittenden Locks will close the large lock chamber to conduct annual maintenance from 0600 on 02LNM13-D7CBBF2026-10-07archivedCOLUMBIA RIVER - WILLAMETTE RIVER General / Marine Construction (Excluding Bridges) / Boring and Core Samples GSI Water Solutions will conduct overwater rotosonLNM13-1C53AF2026-10-07archivedADMIRALTY INLET - HOOD CANAL General / Marine Construction (Excluding Bridges) / Dredging Duwamish Services will be conducting dredging operations near WesternBack to messages