UPDATE MAY 26: A lot of work remains before the closed section of SR 20/N Cascades Hwy (MP 130-156) can reopen, but we reached 2 big milestones:
- Rebuilding the largest washed out embankment at MP 145 to pavement level.
- Drilling the last hole for stabilizing dowels at MP 131.
@east.wsdot.wa.gov
WSDOT North
UPDATE MAY 22: We're continuing to make good progress repairing SR 20 from December washout damage and a March rockslide.
Crews will be working hard through the holiday weekend, and we expect to fully reopen North Cascades Hwy by June 25.
More: bit.ly/SR20RepairsBlog
WSDOT North
UPDATE MAY 20: Crews are making progress in several areas repairing washout damage on SR 20 (MP 142-148).
Near MP 145, crews are rebuilding an embankment from the bottom up and are nearing the top of the roadway. We're also rebuilding washed away roadbed in other areas.
@east.wsdot.wa.gov
(1/2)
WSDOT North
UPDATE MAY 15: Some good news to share - with work happening under both emergency contracts, we expect we'll fully reopen SR 20/North Cascades Hwy by June 25. This is 10 days earlier than the goal we stated last week.
Read more about the repairs: bit.ly/SR20RepairsBlog
@east.wsdot.wa.gov
WSDOT North
UPDATE MAY 13: We began work on a second emergency contract to repair SR 20/North Cascades Hwy today.
This second contract will repair a 6-mile stretch (MP 142-148) where several sections of SR 20 were severely damaged by washouts in December.
More: bit.ly/SR20RepairsBlog
WSDOT North
UPDATE MAY 11: Crews finished scaling work above SR 20 near Diablo Lake over the weekend. Work shifts to drilling the rock face to anchor 20- to 60-foot dowels to further stabilize the slope.
SR 20 remains closed from MP 130-156. No hiking, biking or camping allowed in the area.
@east.wsdot.wa.gov
WSDOT North
UPDATE MAY 7: Scaling work continues on a slope above SR 20 near Diablo Lake. Crews use hand tools, air compression (and a little muscle) to send loose rock down the slope.
SR 20 remains closed from MP 130-156. More info in our latest blog update bit.ly/SR20blog
@east.wsdot.wa.gov
Video
WSDOT North
UPDATE MAY 6: After getting equipment on site, our contractor began inspecting the slope and dislodging loose rocks and debris. This delicate process, called scaling, will continue for several days.
SR 20 remains closed from MP 130-156. No access for hiking, biking or camping.
@east.wsdot.wa.gov
WSDOT North
UPDATE MAY 5: We began work to stabilize the slope & clear debris on SR 20 near Diablo Lake (MP 131) today. This is the first of two emergency contracts needed to repair & reopen North Cascades Hwy.
SR 20 remains closed from MP 130-156. This INCLUDES bikers, hikers and campers.
WSDOT North
Please note SR 20/North Cascades Highway will remain closed from the west side at Colonial Creek Campground (MP 130) to Porcupine Creek (MP 156) until repairs are finished.
This closure INCLUDES no access for hikers, bikers and campers.
WSDOT North
Attention SR 20 travelers! The North Cascades Highway will PARTIALLY reopen TODAY at 2 p.m. from the east up to Porcupine Creek (MP 156). SR 20 will remain a work zone and closed to ALL public access 24/7 from MPs 156-130. Check out our blog: wsdotblog.blogspot.com/2026/04/nort...
