LNM13-5B612A
SÉCURITÉReceived: 28 Oct 2026, 00:00Updated: 4 Nov 2026, 18:24
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- Operationsmarine construction
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COLUMBIA RIVER - VANCOUVER TO BONNEVILLE
General / Marine Construction (Excluding Bridges) / Boring and Core Samples
The Interstate Bridge Replacement Program will be conducting geotechnical investigations west of the existing Interstate 5 Bridge across the Columbia River between Vancouver, WA and Portland, OR at Columbia (RM 106.5) from 02 Nov 2026 – 31 Jan 2027. The work will infringe on the Alternate Barge Channel South, Alternative Barge Channel North, and the Vancouver to The Dalles Channel (lift span). The Tug South Creek and Barge Mark 12 will be on station and will reduce available horizontal clearances. The normal amount of horizontal clearance available at these channels will be reduced, and vessels are advised to use alternate channels if horizontal clearance is not sufficient in the channels. Only one channel will be reduced at any one time. Mariners are requested to maintain an appropriate distance and create no wake within 200 feet. Tug operator will be monitoring VHF Channels 13 and 16. During non-working hours the barge will remain on station with al-round white lights on all 4 corners, pursuant to CFR 83.30. Additional work will take place at other locations in the main stem Columbia River but will not infringe on the designated navigation channels on the main Columbia River. There will be no infringement on the available vertical clearances and no changes to the operation of the lift span. For more information, contact Mark Marine Services at 360-772-0916. Boring Details: Location (LAT/LONG) with State/End dates 1: IBR 10: 45-36.92N 122-40.71W (Dates: 21 – 29 Jan 2027) 2: IBR 11: 45-36.90N 122-40.66W (Dates:12 – 20 Jan 2027) 3: IBR 12: 45-36.94N 122-40.69W (Dates: 21 – 29 Jan 2027) 4: IBR 13: 45-36.94N 122-40.67W (Dates: 12 – 20 Jan 2027) 5: IBR 14: 45-37.01N 122-40.65W (Dates: 23 Dec – 11 Jan 2027) 6: IBR 15: 45-37.01N 122-40.64W (Dates: 14 – 22 Dec 2026) 7: IBR 16: 45-37.00N 122-40.62W (Dates: 3 – 11 Dec 2026) 8: IBR 17: 45-37.08N 122-40.61W (Dates: 20 Nov – 2 Dec 2027) 9: IBR 18: 45-37.07N 122-40.59W (Dates: 11 – 19 Nov 2027) 10: IBR 19: 45-37.15N 122-40.56W (Dates 23 Dec 2026 –11 Jan 2027) 11: IBR 20: 45-37.14N 122-40.55W (Dates 14 – 22 Dec 2026) 12: IBR 21: 45-37.14N 122-40.54W (Dates 3 – 11 Dec 2026) 13: IBR 22: 45-37.21N 122-40.53W (Dates 20 Nov 2 Dec 2026) 14: IBR 23: 45-37.21N 122-40.51W (Dates 11 – 19 Nov 2026) 15: IBR 24: 45-37.28N 122-40.48W (Dates 2 – 10 Nov 2026) 16: IBR 25: 45-37.27N 122-40.43W (Dates 2 – 10 Nov 2026)
USCG Northwest District Local Notice to Mariners 44/2026