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).