R-343 · Route File
Washington · United States
The high State Route 20 crossing through the North Cascades between the Skagit Valley and Methow Valley over Rainy and Washington passes.
red · Confirmation required
A cross-Cascades itinerary on SR 20 cannot pass the closed central section even when both approaches are open.
Planning response: Confirm the complete SR 20 pass status with WSDOT and use an open southern Cascade crossing when the seasonal gates or an emergency closure remain in place.
Seasonal windows are planning triggers, not a substitute for current road, weather or land-access reports. Recheck the official sources below before departure.
Route tire evidence
No reviewed tire observation is published for this route.
No tire name is inferred from route popularity, forum mentions or marketing. A report appears only after its tire, motorcycle, route context, date and named source are reviewed.
Route-specific references
Information tied directly to this road, track or route.
North Cascades Highway SR 20
official · Washington State Department of Transportation
Live pass status, seasonal gate position, conditions and traffic alerts
Washington mountain-pass closure and opening dates
official · Washington State Department of Transportation
Historical and current seasonal closure context for SR 20
Regional reference desk
Shared road, weather and access services used across Route Files in this region.
Field Links are reviewed references, not live guarantees. Conditions, closures, services and regulations change. Confirm critical information with the responsible authority before relying on it.