Road conditions
Closures and crashes from COtrip, on one map with the route and mile marker. Below it: Eisenhower Tunnel and Vail Pass, the I-70 corridor page, and what the season does to Colorado's highways. For the whole country, see the US closures map. City traffic cameras: Denver and Colorado Springs.
The CDOT feed lists 6 closure-type alerts, 0 crashes and 35 roadwork alerts on numbered highways right now. Closure-type alerts include lane closures, so read each one. Listed:
And 3 more on the map below.
Read on Nov 1, 1:42 PM PT. Chain and traction rules are on the Colorado chain law page. A feed with no closure is not a promise a road is open. The map below updates live.
Colorado's DOT traveler site. The list of record for closures, restrictions and detours.
Colorado's official road conditions app is COtrip Planner.
I-70 over the summit: cameras, restrictions and closures on one page.
Mountain passI-70 over the summit: cameras, restrictions and closures on one page.
Mountain passUS 6 over the Divide: closures, snow, plows. Hazmat trucks use it.
Mountain passUS 40 to Winter Park: closures, snow, plows, avalanche control.
Ski resortsThe access roads to 13 Colorado ski resorts: plow trucks where the DOT publishes them, cameras and closures.
CorridorThe whole I-70 corridor, every state it crosses, alerts by mile marker.
Mile markersHow Colorado numbers its highways and where the markers matter most.
ReportWhat the COtrip feed carried over the holiday weekend.
I-70 crosses roughly 450 miles of the state, from the Utah line through Grand Junction, over the Continental Divide, and through Denver to Kansas. I-25 runs the Front Range through Pueblo, Colorado Springs, Denver and Fort Collins. US-50 and US-160 carry traffic across the southern half of the state, and US-40 and US-550 thread the high country.
I-70 west of Denver is the winter story. CDOT's traction law and chain law take effect by mile range, Vail Pass and the Eisenhower Tunnel approaches close in storms, and Glenwood Canyon closes for rockfall and mudslides. The Eisenhower-Johnson tunnel sits around mile markers 213 to 215 at roughly 11,100 feet. Out on the plains, I-25 and I-70 east of Denver close in blizzards when wind takes the visibility.
In October 2026, MileCheck's archive of the COtrip feed held 1,849 unique reports, including 9 closure reports, 61 crash reports, 1,711 work-zone reports and 7 weather reports. The routes with the most reports were I-70, I-25 and US-24. Counts reflect what the feed publishes, so a state whose DOT posts only closures shows only closures. Read the October Highway Report.
The map above shows full closures from the COtrip feed as red markers, crashes in orange, and weather and hazard alerts in blue and purple. Closures the DOT has posted for a future date are listed as scheduled, and ramp and lane closures sit under the toggle so the list stays readable. The page checks MileCheck's feed every five minutes. If the feed cannot be reached the page says so instead of showing an empty map. For the official list, open COtrip.
COtrip is the official source, and dialing 511 in most states reaches the same information by phone. This page reads the same COtrip feed and adds the corridor and pass pages, and your own mile marker if you carry the app.
Chain and traction rules are set by COtrip per road and per direction, and they change with the storm. Restrictions the DOT publishes as alerts appear on the map above and on the Eisenhower Tunnel and Vail Pass pages. Always follow the posted signs. What "chains required" means explains the levels.
This page checks MileCheck's feed every five minutes. COtrip updates individual reports on its own schedule. Source update times are shown when available.
Yes. The app shows the same COtrip alerts on your route, ahead of your position, with the mile marker you are passing. The mile marker works offline in all 50 states. Live alerts are part of MileCheck Premium, $19.99 a year or $4.99 a month after a 2-week free trial.
Your mile marker shows even offline. COtrip alerts on your route and the nearest camera are part of MileCheck Premium and need a connection to update. Runs on CarPlay and Android Auto.
More questions: Why is the highway closed? · Is there one app with 511 alerts for every state? · How do I tell 911 where I am on the highway?
The Monthly Highway Report
Closures, crashes and roadwork from the state road feeds, once a month in your inbox. See the October report. No spam.
MileCheck