Road conditions
Every closure and crash 511 Idaho is publishing, on one map with the route and mile marker. Below it: the live cameras, the I-90 and I-15 corridor pages, and what the season does to Idaho's highways. For the whole country, see the US closures map.
Idaho's DOT traveler site. The list of record for closures, restrictions and detours.
CamerasEvery 511 Idaho camera on one map, with the route and mile marker where the DOT gives one.
CorridorThe whole I-90 corridor, every state it crosses, alerts by mile marker.
CorridorThe whole I-15 corridor, every state it crosses, alerts by mile marker.
Mile markersHow Idaho numbers its highways and where the markers matter most.
ReportWhat the 511 Idaho feed carried over the holiday weekend.
I-84 crosses southern Idaho, roughly 275 miles from the Oregon line through Boise and past Twin Falls toward Utah. I-90 clips the panhandle, climbing over Fourth of July Pass and Lookout Pass to the Montana line near mile 74. US-95 runs the entire state north to south, roughly 538 miles from Nevada to Canada. I-15 carries eastern Idaho traffic through Pocatello and Idaho Falls, and US-20 heads toward Yellowstone.
Winter closes the high passes. I-90 over Lookout Pass and Fourth of July Pass, US-12 over Lolo Pass, and SH-21 toward Stanley see snow, ice and avalanche control, and ITD posts chain requirements and closures on 511 Idaho by route and milepost. In the south, crosswinds and blowing dust hit I-84 across the Snake River Plain, and wildfire smoke can close highways in late summer. The long gaps are the other hazard. On US-95 and US-20 the next services can be an hour away.
Over 25 daily snapshots from September 1 to 25, 2026, MileCheck's archive of the 511 Idaho feed held 269 unique reports, including 2 closure reports and 267 work-zone reports. The routes with the most reports were US-95, I-84 and SR-55. Counts reflect what the feed publishes, so a state whose DOT posts only closures shows only closures. Read the September Highway Report.
The map above shows every full closure 511 Idaho is publishing as a red marker, 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. It reloads every five minutes. If the feed cannot be reached the page says so instead of showing an empty map. For the official list, open 511 Idaho.
511 Idaho is the official source, and dialing 511 in most states reaches the same information by phone. This page reads the same 511 Idaho feed and adds the Idaho cameras, the corridor and pass pages, and your own mile marker if you carry the app.
Chain and traction rules are set by 511 Idaho 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 corridor pages. Always follow the posted signs. What "chains required" means explains the levels.
Every five minutes. MileCheck's server fetches the 511 Idaho feed, converts it to one format shared by all 50 states, and caches it for five minutes. Each alert also carries the time the DOT last updated it, shown in the list.
Yes. The app shows the same 511 Idaho 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, $49.99 a year or $9.99 a month after a 7-day free trial.
Your mile marker shows even offline. 511 Idaho 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.
The Monthly Highway Report
The month's numbers from DOT feeds in all 50 states and BC. See a sample: the Labor Day weekend report. No spam.
MileCheck