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Traveling Idaho

Work Zones

As you travel through work zones, slow down and drive engaged.

Working together for safer work zones
Let’s work together to make work zones safe.
Work zones are a sign to slow down
Work zone incident on I-90
511 Road Conditions & Construction
ITD Construction Projects & Details

See the videos below covering Short Duration Operations for maintenance work and the experience from within the work zone.

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VIDEO: Driving in the Moment

Work Zones are a Sign to Slow Down

Work Zone Awareness: Short Duration Operations

Along with larger road construction projects, which are typically well-marked and have better visibility for drivers, the work of ITD’s highway maintenance crews also often includes a lot of Short Duration Operations. These can pop up anywhere, at any time. Whether it is a highway worker stopping to remove a shredded tire or animal carcass from the road, or performing maintenance work like an impromptu guardrail repair right next to the travel lanes, these jobs generally put workers closer to the road, and closer to danger – there is less time for the worker or the driver to take evasive action in those circumstances. Sadly, an ITD operator was killed just outside Arco during a Short Duration Operation, reminding us all of the importance of being safe and vigilant in all work zones across the state.

Drive Safe. Work Safe. Save Lives.

Work Zone Safety Vests

ITD continually takes steps to improve employee safety. The department has shifted to high-visibility yellow vests to stand out from the orange barrels and equipment on the side of the road. ITD also recommends a common-sense approach to driving in work zones:

  • Slow down and drive at the posted speed limit or at speeds appropriate for conditions.
  • Adhere to traffic signs and follow the directions of flaggers and pilot cars, when present. Prepare for heavy equipment operating in the area.
  • Watch for altered traffic patterns or reduced lane widths. Devote your full attention to driving and avoid distractions such as cell-phone use.
  • Check before leaving home to determine whether you might encounter highway construction. Call 5-1-1, check or download the 511 app.
  • Expect delays and exercise patience.
  • Always wear a seat belt.

511 Road Report

For Current Construction Details:

Navigating Idaho 511
Video: How to navigate Idaho 511

Go to Idaho 511 for information along your travel route.
• For how to set up & customize 511 for you, go to “Your 511” account directions.
With an account you can:

  • Save specific routes & cameras as your favorites
  • Receive alerts about your routes
  • Hear your route first when calling 511
  • Default your settings to the Commercial Vehicle mode

Shifting the Conversation

Buckle up, Idaho Campaign
Be Here Tomorrow | SHIFT

VIDEO: Rules to LVE By

SHIFT | Drive Well Idaho

Learn about Idaho’s effort to SHIFT driving behaviors @

Traveling? Go to:

511 Layers Menu and Icons

The **NEW** Idaho’s 511 road report has many great features.

The 511 Idaho map contains icons you can turn on and off in the Layers menu on the right side of your 511 screen (refer to image on the left). Check the box next to your preferred map icons and uncheck boxes to turn off icon details. After making your selections, click the arrow at the top of the Layers/Legend Menu to close it.511 View Weather Features plus Tray

On the left side of your 511 screen (or below on a phone), you will see a collapsible tray showing severe weather cameras and critical events when they are happening in Idaho. Click the arrow at the top left of the tray to remove it from view (refer to image).

Zoom into the map to see more details in your areas of interest.

  • Once you have a favorite map view with your preferred layer icons, save it as a 511 bookmark.
  • To go back to 511, click your bookmark to return directly to your preferred 511 view.
  • Check out the new Idaho 511 – March 2021

What are the weather conditions on the Idaho routes you plan to travel?

Remote Weather Information System StationThe Idaho Transportation Department (ITD) has developed a network of weather stations, also called Roadway Weather Information Stations or RWIS. These weather stations are located throughout Idaho along the highway system managed by ITD. Go online at to see the latest weather data for each station location.

511 B4 U GO!ITD maintenance crews use the weather stations to gauge local weather conditions and determine the best responses for road clearing. This RWIS data helps our snowplow drivers and other technicians to know how much salt, sand or de-icer to use, and where it is needed. The RWIS program is a highly successful system that many other states, and more than a dozen other countries, have requested program details.

Using RWIS data, ITD crews have been able to keep roads clear and passable more than 85% of the time during winter storms. Back in 2010, that stood at just 28%. Go to the ITD Dashboard to see the latest report on “Time Highways Clear of Snow/Ice During Winter Storms.”

Move Over Law

Idaho’s “Move Over” law has been expanded to include responders to roadside emergencies, such as tow truck operators.

Make the Move Video
Make the Move: Others will follow

Safe Travel Videos

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SHIFT | Drive Well Idaho

Learn more about Idaho’s effort to SHIFT behaviors and emphasize engaged driving @

“Move Over” Law

Law signed by Governor Brad Little
House Bill 106

“Slow Down, Move Over” protects emergency responders and maintenance crews working to keep our roads safe

ITD Safety VestThe “Move Over” law provided protections for police by requiring motorists to move over for law-enforcement personnel operating with flashing lights. Now drivers must also move over for other emergency responders to traffic incidents, too, such as tow truck operators using flashing lights in a stationary position.

Vehicles pass by ITD workers every day on the state highways or the interstate at 60-80 mph or more. The sudden gush of air from the passing motorist or the rocking of the ITD vehicle as a semi passes by is a sober reminder that death is only feet away.

Work Zone Safety Vest “The ‘Move Over’ Law makes an inherently risky job safer for our staff,” said Jerry Wilson, ITD Operations Engineer in North Idaho. “At highway speeds, it only takes a split second for an accident to happen, so making some space to allow our crews to maintain the roads makes the highways safer, both for us and the traveling public.”

“We really appreciate the courtesy of other drivers who slow down and move over to give us a safer space to do our jobs,” said ITD Treasure Valley Incident Response driver Kyle Wright. “That buffer of space makes a big difference. The less we have to worry about vehicles moving past us, the more we’re able to focus on the incidents we’re working on, and hopefully remedy them more safely and quickly.”

Safety News

Traffic light at US-26 and Woodruff in Idaho Falls being replaced following accident

May 31, 2022
IDAHO FALLS – The Idaho Transportation Department is advising drivers to use caution at the intersection of US-26 (North Yellowstone...
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Power and Franklin Counties Recognized for Zero Highway Fatalities

April 21, 2022
POCATELLO – At the Transportation Board Meeting held in Pocatello today the Idaho Transportation Department presented their “Zero Fatality” award...
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Work Zones are a Sign to Slow Down

April 12, 2022
National Work Zone Awareness Week is April 11-15 IDAHO – National Work Zone Awareness Week (NWZAW) will be observed April...
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Drunk driver cited after work zone incident on I-90 in January

April 12, 2022
Idaho State Police investigated the incident and cited the driver for driving under the influence, which as a first-time offense is a misdemeanor with a penalty of a $1,000 fine and a one-year license suspension. 
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New 511 Traveler Services App Launches

March 24, 2022
This week, ITD’s 511 mobile app for traveler advisories and information gets an upgrade. The new and improved app features...
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Idaho State Highway 55 Smiths Ferry latest update

January 27, 2022
Late on Saturday, Jan. 22, a slide occurred just north of Smiths Ferry on Idaho State Highway 55. This slide was in a different section than the previous slide that occurred last fall and was much smaller in scale.
Read More

Mr. Snowplow created in response to repeated snowplow strikes

January 19, 2022
A concerted effort was launched in late December amid a dramatic spike in snowplow strikes around the state.The first vehicle...
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Public comment sought on plan for Idaho highway rail grade crossings

January 7, 2022
BOISE - Public input is being sought on the action plan to guide Irail grade crossings on Idaho Highways. Through...
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ITD issues reminder on plow safety following six incidents in two weeks

December 20, 2021
Last winter, eight plows were hit by other vehicles. In just the last two weeks, four plows have been hit.
Read More

Spring Driving

Spring Load Limits

  • For information on current restrictions, load limits & locations on Idaho highways go to:

Spring conditions with roads breaking up

Spring Driving Hazards
Spring Driving Hazards
Every spring, ITD imposes spring breakup load limits to protect our highways. This practice minimizes damage to these roads from heavier vehicle loads using these routes during the freeze-thaw cycle. Spring breakup load limits are fairly common in areas with the most severe winter weather — northern and eastern Idaho.

Typically, larger commercial vehicles are limited to a lower speed and axle weight.

When subjected to high speeds and heavy loads, soft spots begin to wear, eventually breaking up and creating potholes.

Motorists are urged to be patient when traveling on highways where limitations have been placed.

Large Rock SlideThere’s nothing like a car-sized boulder resting in the middle of a highway to wreak havoc with your highway travels. Driving has its share of inherent risks, but ITD wants to do everything possible to narrow down the list of hazards.

Every year, the potential exists for rockfall. If there’s moisture in the air, chances are pretty good there will eventually be rocks that tumble down to the road below. This is because when hillside soils get saturated by that moisture, they start to give way and can no longer hold back the rocks embedded in those soils. Precipitation in the form of snow, rain or even fog with a high moisture content increase the chances of a slide.

Not everyone will be like the massive landslide near Elk City in 2016, but it is a stark reminder of the dangers posed this time of year.

These events demonstrate an increased likelihood of rocks and debris releasing from hillsides each spring, especially for highways bordered closely by steep hillsides or mountains.

“Many of Idaho’s highways cut through forests and along steep slopes,” said ITD Emergency Program Supervisor Neal Murphy. “In the spring, when soils are saturated, the risk of falling debris is significantly higher. That is especially true in forests that have experienced recent fire or in mountainous terrain that is vulnerable to avalanches.”

The Idaho Transportation Department reminds drivers to plan ahead and check the 5-1-1 traveler advisory system (via phone or web) before heading out, especially to the mountains.

Boulder in roadwayIn the event of a slide or rocks on the road, drivers are asked pull onto the shoulder, turn emergency flashers on, and call local law enforcement, the local ITD office or nearest maintenance facility with a location description or milepost. Remain in the vehicle until help arrives.

The landslide west of Elk City carried about 235,000 cubic yards of material – 47 million lbs. – down to the highway. The biggest boulder near Smiths Ferry was estimated at 29 tons. While those are staggering numbers, even much smaller debris could derail a motorcyclist or bicyclist.

A recent spring was highlighted by a 50-ton boulder coming down the hill on Warm Springs in Boise, a rockslide on Idaho Highway 97 in northern Idaho that carried an estimated 450 tons of debris, a huge boulder on Idaho Highway 55 at Smiths Ferry (above photo), and this massive boulder in eastern Idaho.

spring avalanche and rock slideSpring snow conditions can be deceptive. While the air may feel warmer and thoughts turn to spring, often conditions are ripe for a springtime slide.

Our ITD avalanche forecasting crew remains busy into the spring, monitoring avalanche conditions. Even in years with less snowpack, warmer weather creates higher avalanche danger. It can be a time of high volatility from loose, wet snow. Spring can also hold avalanche hazards not encountered during the colder parts of winter. Snowpack and weather transitioning into a warmer and wetter spring pattern can result in snow instability.

Due to this risk, our avalanche crew continues to actively monitor snow pack and evaluate weather conditions outside of the traditional winter months. Their assessment guides decisions related to keeping motorists and our road crews safe.

Snow avalanchesITD encourages anyone that lives, works or travels through our state’s avalanche zones to visit before you head out. It provides updated traveler conditions, information on potential closures or other hazards.

Winter Ready

Shifting the Conversation

Buckle up, Idaho Campaign
Be Here Tomorrow | SHIFT

VIDEO: Rules to LVE By

SHIFT | Drive Well Idaho

Learn about Idaho’s effort to SHIFT driving behaviors @

Top 10 Winter Driving Tips
Top 10 Winter Driving Tip

Video: Winter Driving Tips
Driving Tips | Are you Idaho Ready?

Road & Weather Conditions, Cameras & Construction

Be prepared for changing travel conditions all across Idaho

• Go to: | Idaho’s *NEW* 511 Road Report

• Learn more about Idaho highways at Winter Driving: Be Idaho Ready
• For construction project locations & details go to:
VIDEO: I-84 Corridor, Drive Engaged


Winter Emergency Kit
Winter Emergency Kit

Winter Driving in Idaho

Whether you’ve lived in Idaho your whole life or are a new resident, it’s important to do everything you can to prepare for an Idaho winter. As the cold weather sets in, so do winter road conditions.

How do you prepare for winter travel in Idaho?

We recommend starting by calling 5-1-1 or visiting to check road conditions and alerting friends and family of your travel plans (especially if you are traveling through areas with poor cellular service).

Winter Driving Checklist: Is your vehicle ready for the road? Did you pack essential items in case of an emergency?

Studded Snow Tire Dates: Legal use timeframes for Idaho and surrounding states


Maps & Resources

Upper Mesa Falls in Eastern Idaho
Upper Mesa Falls in Eastern Idaho

Idaho Maps

Websites for traveling Idaho


Click social media icons below to follow ITD & stay current
on transportation-related news.

IPlan | Idaho’s online mapping resource
Go to IPlan to find:

Idaho History
Learn Idaho history as you travel the state & watch for the Historical Markers along your drive.

Idaho Transportation Department (ITD) Information