Wolf Creek Pass: check your brakes at the summit, not at the hairpin

Daily edition · Wolf Creek Pass, Colorado — US-160

Published November 2, 2026 · TruckRescueNow daily edition — Day 1

The storm is leaving. The descent is not.

The winter storm over the San Juans lets go this afternoon — and the most dangerous miles on US-160 are still the eight miles down from Wolf Creek Pass.

The warnings expire between 11 a.m. and 2 p.m. today. The grade does not expire at all: 7 percent, for more than eight miles, off the summit.

Every truck that crosses today makes the same decision at the top: check the brakes at the summit, or meet them again at the hairpin.

Morning Coffee Brief

National Weather Service, Grand Junction: up to 18 inches of snow and gusts to 50 mph above 10,000 feet in the San Juans — that warning runs to 2 p.m. ET today.
For Wolf Creek itself, NWS Pueblo calls for 8–14 inches above 10,000 feet, warning to 1 p.m. ET — and it was 29 degrees at the pass this morning.
The descent off Wolf Creek runs 7% for more than 8 miles, with two runaway ramps. The ramps are the last resort. They are not the plan.

A driver at a truck-stop window with breakfast and coffee in front of him, looking out at the trucks

The summit check

Colorado DOT's guidance for this pass is a discipline, not a suggestion — and it happens before the descent, at the top:

Stop at the summit shoulder. It is the chain-up area, and it is the last flat, safe place to stand.
Walk the hubs. Heat you can feel at a wheel end up here is information. Heat you discover at mile four is a fire starting.
Pick your gear before the grade picks it for you — low gear, and let the engine hold the truck.
Do not ride the brakes down. Snub them, release, let them cool. Brakes that stay hot lose their grip on the load.

Brake heat announces itself

This failure does not arrive silently. Last week a trailer's brakes caught fire on I-5 at Tacoma. In Hudson, Iowa, a truck's brake drums overheated the same way, without the flames.

Heat caught at a summit check is a stop and a cool-down. Heat caught at the hairpin is a runaway ramp — or worse.

The check costs ten minutes at the top of the pass. The alternative costs whatever the ramp costs.

A service call on flat ground

A brake problem found at the summit is a service call on flat ground. A brake problem found on the descent is a recovery.

Roadside help for a pass like this stages from the valley towns at either end — one more reason the summit check matters: the top is the last place a service truck can reach you on the flat.

If the hubs are hot, the pedal feels wrong, or the brakes are already talking to you, do not descend on hope. What to do when your brakes are smoking on a grade is the guide for the moment itself, and what brakes out of adjustment actually means covers the check behind it.