Road conditions

Idaho road conditions right now

Closures and crashes from 511 Idaho, 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. City traffic cameras: Boise and Coeur d’Alene.

Idaho at the last read

The ITD feed lists 2 closure-type alerts, 0 crashes and 75 roadwork alerts on numbered highways right now. Closure-type alerts include lane closures, so read each one. Listed:

SR-46 NB: Major Road construction on SH-46 Both Directions from Spring Creek Rd to US-20. All lanes closed. 10/30/2026 5:30 PM MT to 11/30/2
SR-46 SB: Major Road construction on SH-46 Both Directions from Spring Creek Rd to US-20. All lanes closed. 10/30/2026 5:30 PM MT to 11/30/2

Read on Nov 1, 1:42 PM PT. Chain and traction rules are on the Idaho chain law page. A feed with no closure is not a promise a road is open. The map below updates live.

Loading 511 Idaho alerts…

More on the map: tap the layers button at the top left of the map.Full closureCrashWeatherHazardRamp or laneWork zoneFaded markers are scheduled, not active

Closures and crashes

Loading the 511 Idaho feed…

Source: 511 Idaho, through MileCheck's feed, checked every five minutes and converted to the same format MileCheck uses for all 50 states. Ramp, lane and shoulder closures are listed under the toggle, not as full closures. Closures with a future start date are marked scheduled. Positions are the DOT's; mile markers are approximate.

Where to look next

Official source

511 Idaho

Idaho's DOT traveler site. The list of record for closures, restrictions and detours.

Idaho's official road conditions app is Idaho 511.

Cameras

Idaho highway cameras

Every 511 Idaho camera on one map, with the route and mile marker where the DOT gives one.

Corridor

I-90 conditions

The whole I-90 corridor, every state it crosses, alerts by mile marker.

Corridor

I-15 conditions

The whole I-15 corridor, every state it crosses, alerts by mile marker.

Mile markers

Mile markers in Idaho

How Idaho numbers its highways and where the markers matter most.

Report

Labor Day 2026 in Idaho

What the 511 Idaho feed carried over the holiday weekend.

Driving across Idaho

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.

What the season does to Idaho's highways

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.

Idaho facts, with sources

Crash clearance. From September 25, 2026 to October 16, 2026, 55 crashes on the 511 Idaho feed were seen on at least two reads. A crash stayed posted a median of 1 hr 35 min, and for the middle half it was between 48 min and 2 hr 25 min. Each DOT decides when to post and remove a crash, so compare Idaho with Idaho over time, not with other states. How the numbers are made.
Chain law. Idaho Code 49-948 requires certain commercial vehicles over 26,000 lb to use chains when the restriction is active. The law lists exemptions. ITD may activate commercial chain requirements on designated routes when roadway conditions meet the law's requirements. There are no named levels. Idaho chain law, with sources.
Sleeping at a rest area. Yes, for up to 10 hours at interstate rest areas and 16 hours on other state highways. Source: IDAPA 39.03.50, Section 300. Idaho rest area rules.
Roads that close for winter. Banner Summit closure: Closes when avalanche danger is high, with no fixed dates. Reopens once the snow settles. Seasonal closures in Idaho.

Before a Idaho road trip

Check the map above for anything red on your route, then open 511 Idaho for the DOT's own detour and restriction text.
Look at the road. The Idaho cameras show the pavement itself, and most carry the mile marker.
For the long haul, the I-90 and I-15 corridor pages carry alerts for every state the route crosses, not only Idaho.
Know how to say where you are. Dispatch, 911 and tow companies ask for the route, the direction and the mile marker. How to report your location on the highway.
Carry the app. The mile marker works offline in all 50 states, and the same 511 Idaho alerts show on your route as you drive.

What October looked like

In October 2026, MileCheck's archive of the 511 Idaho feed held 312 unique reports, including 7 closure reports, 11 crash reports and 292 work-zone reports. The routes with the most reports were I-84, US-95 and I-90. Counts reflect what the feed publishes, so a state whose DOT posts only closures shows only closures. Read the October Highway Report.

Questions, answered

Is the highway closed in Idaho right now?

The map above shows full closures from the 511 Idaho 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 511 Idaho.

Where do I check Idaho road conditions?

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.

Are chains required in Idaho?

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.

How often does this page update?

This page checks MileCheck's feed every five minutes. 511 Idaho updates individual reports on its own schedule. Source update times are shown when available.

Does the MileCheck app show these alerts?

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, $19.99 a year or $4.99 a month after a 2-week free trial.

Know exactly where you are — live

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.

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