Travel reduced to one lane on SR 20 near Loup Loup Summit

Load restrictions and signal-controlled traffic are currently in place

By Lauren Loebsack

UPDATE - Friday, May 31
At 9 p.m. on Tuesday, June 4, SR 20 will reopen to at least one lane of signal-controlled website online visitors close to Loup Loup Summit on the website of a washout in early May. The freeway had been totally closed for about per week as maintenance continued on the hillside. Repair work is ongoing for what is anticipated to be a number of extra weeks so drivers must count on some delays via the work zone and be alert and secure round street workers.

UPDATE - May Thursday, May 23

The emergency restore occurring on SR 20 east of Loup Loup Pass following a washout previous this month will require a complete closure of the highway. From 6 a.m. Tuesday, May 28 till 9 p.m. Tuesday, June 4, the freeway might be totally closed at milepost 222.4. The contractor has reached a level of their work which will require them to excavate very tender fill fabric underneath the roadway, which might well compromise the balance of the lane that's nonetheless open to traffic. For the security of drivers, it's going to be essential to limit all journey via that edge till that work is complete. Westbound website online visitors from Okanogan towards Twisp might be detoured south alongside US 97 and eastbound website online visitors from Twisp towards Okanogan might be detoured south alongside SR 153.

UPDATE - Monday, May 20

Work maintains on the emergency maintenance to SR 20 close to the summit of Loup Loup among Twisp and Okanogan following a washout previous this month. The contractor accomplished an entry street from the roadside down to the backside of the washout. Next they may well haul rip rap and fill down the street to rebuild the slope from the backside up. One lane, signal-controlled website online visitors is nonetheless in position although it is you'll be able to some complete closures might be essential because the restore continues.

UPDATE - Tuesday, May 7

An emergency contractor has been named to rebuild the hillside underneath the eastbound lane of SR 20 among Loup Loup summit and Okanogan that washed out on Wednesday, May 1. Our geotechnical engineers have designed a restore plan and Hurst Construction of East Wenatchee will start mobilizing and might well start staging tools once this weekend.

For now, because the hillside underneath the westbound lane stays strong and single-lane alternating website online visitors will continue, as will oversize load restrictions without automobiles wider than 12 ft being permitted. As the restore work proceeds, some complete closures and a detour are probably to be necessary. An anticipated 15-20,000 cubic yards of rocks and dust slid towards Loup Loup Creek lots of of ft under the highway. Our geotechnical engineers observed flooring water saturated the soils and triggered the washout under the street seven miles east of Loup Loup Pass at milepost 222.4.

There isn't any estimate for how lengthy the maintenance will take. The preliminary hurdle to overcome is finding and transporting 2,000 unload truck quite a bit of boulders, rock and gravel to rebuild the hillside.

The recent slide edge is set a mile extra east from the position a collection of slides closed 16 miles of SR 20 in April, 2017, requiring nearly 4 months to repair.

Original Post

We've considered some pretty climate these days and with that comes lots of of us out exploring our state. But if you are planning a experience on SR 20 among Twisp and Okanogan, be ready for some delays. A mudslide previous this week has left only 1 lane open about seven miles east of Loup Loup Pass at milepost 222.4. Our geotechnical crews had been on scene in view that the incident and have observed that flooring water eroded the financial institution under the road. An emergency restore plan is being developed, but for now, we have put in a website online visitors sign as effectively as limitations and cones to assist e-book website online visitors via the only open lane. Additionally, no automobiles wider than 12 ft are permitted.

There isn't any estimate yet on while the roadway might be restored to normal.

The recent slide edge is much lower than a mile east of the location the position a collection of slides closed SR 20 in April 2017. At that time, nine exceptional slide components from milepost 207 to milepost 222 closed SR 20 and required nearly 4 months of restore work.
A look at the location of the mudslide that has a lane closed on SR 20. (Picture courtesy of Okanogan County EMS).

A traffic signal will direct traffic through the open lane at the site of the SR 20 mudslide east of Loup Loup Pass summit.

Repairing the roadway ought to be no simple task. The peak and slope of the roadway and hillside show very hard conditions. It's now not identified yet if making maintenance from underneath the roadway is feasible, and at best, the work ought to be very difficult. If it is now not seemingly to make maintenance from below, we might desire to work from above the washout. Repairs might require a complete closure of the roadway.

If you ought to force by way of the area, please be ready for power delays and be alert for street workers. Watch your velocity and abide by the visitors signals. We will offer updates as a plan is developed.
A mudslide took down guardrail and some of the shoulder of SR 20 east of Loup Loup Pass summit earlier this week.

The steepness of the slope and height of the road will make emergency repairs a significant challenge.


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