Landslide on I-84 snarls traffic

ROCKS and debris lie in the right eastbound lane of I-84 at milepost 61 Thursday morning. A landslide likely triggered by the weather occurred Wednesday evening, sending an estimated 2,000 cubic yards of debris into a portion of the freeway just a mile west of Hood River. Luckily, no one was injured, but the right eastbound lanes of I-84 remain closed from milepost 17 to 61.5.

Photo by Adam Lapierre.
ROCKS and debris lie in the right eastbound lane of I-84 at milepost 61 Thursday morning. A landslide likely triggered by the weather occurred Wednesday evening, sending an estimated 2,000 cubic yards of debris into a portion of the freeway just a mile west of Hood River. Luckily, no one was injured, but the right eastbound lanes of I-84 remain closed from milepost 17 to 61.5.

Both eastbound lanes of Interstate 84 will likely remain closed throughout the weekend after a landslide sent down 2,000 cubic yards of rock across the freeway Wednesday about a mile west of Hood River at milepost 61.

A rock face on the south side of I-84 gave way shortly before 7:30 p.m. Wednesday, sending debris into the freeway jersey barriers, which were pushed by the landslide all the way into the center of the eastbound lanes.

The front end of a Ford Focus hatchback driven by Daniel Koopman, 54, of Summerville, was badly crushed after Koopman collided with the boulders that had tumbled down the rock face and into his lane. Miraculously, Koopman was uninjured in the crash.

photo

ODOT workers inspect the new rock face exposed after Wednes-day’s landslide. ODOT reported it would be dislodging loose rocks over the weekend to open up at least one eastbound lane of I-84 by Monday.

Hood River Fire and EMS, the Hood River County Sheriff’s Office, the Hood River Police Department, Oregon State Police and the Oregon Department of Transportation responded to the incident, according to Sheriff Matt English, who was on scene until the early morning hours on Thursday.

“It was a mess,” he said. “It was hours and hours.”

The landslide forced ODOT to close both lanes of I-84 eastbound from milepost 17 near Troutdale all the way to milepost 61.5. One lane of I-84 westbound from milepost 61.5 to 60 was also closed for safety reasons.

Dave Thompson, ODOT spokesperson, said the decision was made to close the interstate at Troutdale as opposed to Cascade Locks due to traffic concerns. He explained that when I-84 is closed — during snow events, for example — truckers that are driving through often wait outside the closure area until conditions improve. ODOT did not want truckers to line up in Cascade Locks, he said, since there were comparatively fewer amenities available than in Troutdale. Oversized trucks are not allowed to travel on State Route 14 in Washington — one of the detour options — and others avoid Highway 26 due to the risk of severe weather on the mountain passes.

“It’s a matter of safety and convenience in the long run,” Thompson added.

Local residents, however, are allowed to travel inside the closure area, but may be asked to show identification to ODOT employees before entering.

On Thursday, ODOT geologists and hydrologists were busy assessing the stability of the rock face, but already had one prime suspect as to what likely triggered the landslide.

“We’ve had a lot of wind, a lot of rain, a lot of freezing going on, and that’s a recipe for slides,” explained Don Hamilton, spokesperson for ODOT.

Not only freezing, but thawing. After last week’s cold, snowy weather, temperatures soared into the 50s, making a big dent in the snow melt and contributing to the conditions primed for landslides.

Location may have also played a factor in the landslide. Exactly one month prior, a boulder described as “the size of a Volkswagen” by authorities dislodged from a rock face at milepost 61 and deposited itself smack in the middle of the right eastbound lane. In 2004, another landslide caused the closure of I-84 near milepost 61 and ODOT removed dangerous boulders from the rock face in the hopes of preventing future landslides.

When asked if ODOT would be taking measures to prevent further landslides at milepost 61, Hamilton said the state transportation agency “can’t prohibit landslides” but added, “We take steps when we can, where we can.” Hamilton said ODOT often takes down loose rocks, plants trees, or installs netting or other barriers to mitigate the potential for landslides.

ODOT reported Thursday evening that a contractor would begin bringing down loose fragments from the rock face Friday, which was expected to take two full days to complete. After the rocks are brought down, ODOT says cleanup of the rock and debris will begin in earnest. ODOT estimates it will take 200 dump truck trips before all the debris is removed. ODOT hopes to open one eastbound lane of I-84 sometime Monday by shifting the median barrier into the westbound lanes.

More mild and wet weather forecast for this weekend will do nothing to alleviate landslide risks. The National Weather Service has issued a flood watch for the Northern Oregon Cascade Region, warning “landslides and debris flows are possible,” and that “structures and roads located beneath steep slopes… in canyons and near the mouths of canyons may be at serious risk of rapidly moving landslides.”

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