I-15 Idaho Road Conditions

I-15 crosses 196 miles of Idaho, between the Utah line and the Montana line. That is 14% of I-15's 1,433 miles.

2 current reports along the route. Always check with the responsible state DOT before setting off.

• Restriction

  Long term road construction on I-15 from MM (77) to MM (80). 12/3/2024 7:13 AM to 6/1/2027 6:00 PM Mon, Tue, Wed, Thu…

  Long term road construction on I-15 from MM (77) to MM (80). 12/3/2024 7:13 AM to 6/1/2027 6:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 25ft Speed Restriction: 65mph Activities: Mandatory Speed Limit in Force, Use Caution.

  I-15 • ID • Ongoing

• Restriction

  Long term road construction on I-15 Both Directions from Inkom to Portneuf River. 3/2/2026 7:00 PM to 10/31/2026 7:00…

  Long term road construction on I-15 Both Directions from Inkom to Portneuf River. 3/2/2026 7:00 PM to 10/31/2026 7:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft

  I-15 • ID • Until Nov 1, 1:00 AM

NOAA 1991–2020 Climate Normals, from 2 weather stations in Idaho. A dash is a figure that station does not report, not a zero.

Every figure above is a town or a city. The summits are a different climate: Lookout Pass has its own page with the readings at the top and a six-day summit forecast.

Towns Along I-15 in Idaho

From Malad City to Idaho Falls, with the position of each town measured along this stretch itself — counted from the Malad City end, not from a state milepost, so it will not match the numbers on the signs.

1. 13 mi Malad City
2. 70 mi Pocatello 1.9 mi off the road
3. 73 mi Chubbuck 1.1 mi off the road
4. 93 mi Blackfoot
5. 110 mi Shelley 2.7 mi off the road
6. 118 mi Idaho Falls

Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.

Related Roads

I-15 in Idaho Road Weather FAQ

Is Interstate 15 in Idaho closed right now?

No full closures are reported on I-15 in Idaho as of Sep 11, 2026 1:16 AM UTC. 2 lane closures, roadworks or restrictions are in force. They are listed under closures and road blocks on this page.

What are I-15 in Idaho road conditions today?

The map on this page colors the route along I-15 in Idaho by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 11, 2026 12:19 AM UTC. Right now temperatures run from 73°F to 84°F and the strongest wind is 17 mph.

Where are Idaho road closures reported officially?

Idaho's official traveler information service is 511.idaho.gov, and it is where closures and restrictions are reported.

How often are I-15 in Idaho road conditions updated?

The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.