MileCheck Highway Report

MileCheck Highway Report: Idaho, September 2026

by MileCheck · October 1, 2026

What Idaho's department of transportation (DOT) feed showed in September 2026. Part of the national MileCheck Highway Report, September 2026.

✉ Get the MileCheck Highway Report by email, once a month →

How we got these numbers: These counts come from a daily copy of Idaho's department of transportation (DOT) feed, Sept. 1 through Sept. 30, 2026. Each alert was counted once. An alert posted and removed between two daily copies is not counted. Not all states report the same data. Fire figures are as of Sept. 30, 4 PM Pacific.

1crashes reported in September

4closures on the feed

307roadwork records on the feed

12wildfires on the national list, as of Sept. 30, 4 PM Pacific

Crashes

1 crash was reported in Idaho in September.

Routes with the most crash alerts

SR-1 — 1

Closures and roadwork

4 closures and 307 roadwork records were on Idaho's feed in September, out of 312 alerts of all types.

The routes with the most alerts were US-95, I-84 and SR-55.

Winter closures

Roads that usually close for winter

SH-21, Banner Summit closure — Closes when avalanche danger is high, with no fixed dates. Reopens once the snow settles. Source

Timing comes from each agency's own page. Exact dates depend on snow. We update this list each month through winter.

Wildfires

Idaho had 12 fires on the national wildfire list as of Sept. 30, 4 PM Pacific.

Largest fires, as of Sept. 30, 4 PM Pacific

Tartar (Washington County), 158,027 acres, 100% contained
Cascade (Idaho County), 7,475 acres, 80% contained
Moose Mountain (Clearwater County), 5,831 acres, 90% contained
Upper Smith (Boundary County), 4,848 acres, 41% contained

Thank you to the firefighters and crews who worked these fires all season.

Live fire perimeters are at milecheckapp.com/fire.

See the national report or another state.

The live version is in the app.

MileCheck shows state DOT feeds for crashes, closures, and delays in all 50 states, British Columbia, Alberta and Manitoba as they are published, with your nearest mile marker.

App Store Google Play

Built from MileCheck's archive of state DOT road feeds. A new Highway Report comes out at the start of every month.