Resolved Oct 24, 2026 at 9:34 AM. Kept for reference.
ModerateRoadThe Slope
US-550N traction law code 15
San Juan County · Started Oct 24, 2026 at 5:45 AM · Updated 2d ago
San Juan Countyarea
Oct 24, 2026, 5:45 AMeffective
Oct 24, 2026, 9:34 AMexpires
The Slopesource
Warned area as issued by the National Weather Service
Full advisory
Northbound and southbound open. Between County Road 60B (near Silverton) and US Basin Brooklyns / 825 (9 miles north of the Silverton area) from Mile Point 70 to Mile Point 80. Passenger vehicles that are all-wheel drive (AWD) or four-wheel drive (4WD) must have winter (Mountain Snowflake icon) or mud and snow (M+S or M/S) or manufacturer rated all-weather tires with adequate tread depth of at least 3/16 of an inch. Two-wheel drive (2WD) vehicles are required to have chains or an approved traction device. Slower speeds are advised.