Debris Flow Repairs On Historic Highway Planned

Work to repair the site of nearly 30 debris flows that occurred in early 2021 along the Historic Columbia River Highway a mile west of Multnomah Falls is underway. The Oregon Department of Transportation made temporary repairs at the time, and. beginning this fall will make additional repairs, including cleaning out debris from basins, diverting the flow of stormwater with new culverts under the Historic Highway and Interstate 84, and a new berm. The repairs are intended to reduce the potential for debris from any future landslides to impact the highways. While the landslide repair is underway, travelers can expect brief delays during daylight hours while trucks are entering and exiting the work zone on the Historic Highway, and a full closure of the Historic Highway between Angel’s Rest and Wahkeena Falls from 7 a.m. September 27 to 7 p.m. September 28. When work begins on the culvert under I-84 this fall, a temporary access road will be installed on the north side of I-84 down to the Columbia River, and crews working primarily on the westbound shoulder of I-84 with occasional east and westbound single lane closures at night.

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