Historic Highway closure Sept. 27-28 for landslide repair west of Multnomah Falls
Sept. 20, 2022
Contact: ODOT, Don Hamilton, 503-704-7452
Work to repair the site of debris flows along the Historic Columbia River Highway a mile west of Multnomah Falls is underway.
In early 2021, nearly 30 debris flows, a type of fast-moving landslide, occurred along the Historic Columbia River Highway a mile west of Multnomah Falls leaving debris on the roadway. We cleaned the debris, repaired the highway and made temporary repairs to the slope. Beginning this fall, we will make additional repairs, including cleaning out debris from basins, diverting the flow of stormwater which includes new culverts under the Historic Highway and I-84, and a new berm.
One new culvert will allow stormwater to drain off the steep slope and under the Historic Highway while a separate culvert beneath I-84 will allow stormwater to flow into the Columbia River. These repairs will help 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. Watch for flaggers directing traffic.
- A full closure of the Historic Highway between Angel's Rest and Wahkeena Falls from 7 a.m. Tues., Sept. 27 to 7 p.m. Wed., Sept. 28. Visit Multnomah Falls from the Exit 31 parking lot or by heading west on the Historic Highway from Exit 35.
When work begins on the culvert under I-84 this fall, travelers can expect:
- A temporary access road installed on the north side of I-84 down to the river.
- Crews working primarily on the westbound shoulder of I-84 with occasional east and westbound single lane closures at night.
For more information on construction in the Columbia River Gorge and to sign up for email updates, visit www.i84GorgeConstruction.org
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