Skip Top Navigation

Budget Information

SR 20 - Loup Loup Pass Emergency Repair 2017 - Phase 2


June 19-24 2017

  • SR 20 remains closed from MP 207 west of Twisp, over Loup Loup summit to MP 223, east of Okanogan. 
  • There are nine locations where rocks, mud, debris and flooding washed out or damaged the roadway in that 16 mile section. 


Here’s this week’s update 

While there are still several challenges to work through, there is a good chance we will be able to reopen the roadway to one-way alternating traffic by July 9th, eleven days earlier than the previously projected July 20th date.

Work will continue so even when it reopens, expect flagged traffic and some delays.

Current Status:

• MP 207.1, Frazer Creek Riprap – Complete
• MP 208.5, Frazer Creek Riprap – Complete
• MP 211.85, Roadway Failure – All excavation of the failed/saturated roadway fill is complete. Two new culverts have been installed. The contractor has placed 25,000 cubic yards of fill, restoring 55 feet of the fill height. There is still roughly 35 feet of fill height to reconstruct.
• MP 211.88-212.75, Ditch Scour and Shoulder Repair – Saw-cutting is complete and the damaged pavement has been removed. Paving is scheduled for next week. Large rocks will be placed to armor the ditch next week as well. Work here should be done in two weeks.
• MP 221.00, Shoulder Washout – The riprap has been placed and the embankment has been rebuilt. Guardrail is being installed this week and paving will be completed next week.
• MP 221.08, WB Shoulder Failure and Landslide –Construction of a rock buttress at the base of the slope is progressing. Multiple springs of water are flowing out of the hillside above the work area adding to the challenge.
• MP 221.4, Flash Flood Mud Slide – Debris is cleared. Crews are working to rebuild the slope where it eroded away in two sections and replace the ends of two culverts -should be completed this week.
• MP 221.65, Roadway Failure – The fill has been reconstructed. Two new culverts were installed. The gravel surfacing is being placed now and paving is scheduled for next week.
• MP 222, Mudslide blocked roadway – Debris is cleared and most of the ditching and shaping is complete. Still need to rebuild and level the top foot of a couple 100’ sections that settled when water flowed through the fill.

Note all rumble strip installation, striping, etc. will be done as last steps when the work is complete.

This project is WSDOT North Central Region’s highest priority. We know the detour is a pain. Everyone’s goal is to reopen the highway as soon as possible, while continuing to do the work in as safe a manner as possible.

Okanogan EMS put a Loup Loup video on Facebook this week:

Why is WSDOT repairing/rebuilding the highway?
Heavy rain saturated hillsides east of the Methow Valley causing flooding and mudslides first closing SR 153 between Twisp and Pateros. On Friday morning, April 7th, a small slide came in west of Loup Loup summit on SR 20. By the end of that day, several sections of SR 20 washed out, flooded or were buried under rock and debris. Many of the hillsides above the highway were burn scarred from two previous years of fires. Unusually heavy rain saturated the soil. (Lake Conconully, less than 10 miles north of Loup Loup has recorded 238% of normal runoff.)

The End Result
A functional highway between Twisp and Okanogan

Project Benefits
New more efficient drainage features.
New guardrail, striping, signage and other safety features.

What is the project timeline?
The phase two 50 day emergency contract expires July 20.  Barring weather and other setbacks, we hope to have traffic at some level, restored shortly after Independence Day.

Financial Information

Financial Data for PIN 202002J
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $4,443
CWA $0
Total $4,443

Project signage will reflect the cost of construction engineering, project bid award and sales tax.

The 50 day, Loup Loup Pass Emergency Repair Phase 2 contract # 9107 was awarded to KRCI LLC for $2,223,786.00 on May 18, 2017, as the initial 30 day emergency contract expired.

How can I get more information?
Project Engineer Dan Lewis
Washington State Department of Transportation
North Central Region
1551 North Wenatchee Avenue
Wenatchee, WA 98801-1156
(509) 667-2880

back to top