US-20 identified for further funding

Roadside view of US-20 roadway and traffic west of Idaho Falls.

Today at its regular monthly meeting the Idaho Transportation Board accepted staff recommendations on priority corridors across Idaho using TECM funds to address congestion, including several projects on U.S. Highway 20 near Idaho Falls. Since Transportation Expansion and Congestion Mitigation funds were first used by the department for bonding and advancing major projects in 2022, ITD has delivered timely construction of expansion projects across the state. Today’s actions are a continuation of that.

Funding came from House Bill 25, which was passed by the Idaho Legislature earlier this year. The legislation provides an additional $20 million a year to the Transportation Expansion and Congestion Mitigation fund for the next three years and allows the department to invest an extra $1 billion in the Idaho transportation system.

With this new funding, the following projects have been recommended for further design and construction:

US-20 west of Idaho Falls: This project will increase capacity by widening the road to two lanes in each direction starting at Idaho Falls and moving west as funding allows. Widening will increase safety for freight, recreational and commuter traffic due to limited passing opportunities and lines of sight. Construction is anticipated start in 2026, two years earlier than planned.
US-20 widening from Chester to Ashton: This project is anticipated to expand the existing roadway into a four-lane divided highway. Construction is anticipated to start in 2028.
I-15 and US-20 Interchange: This project continues to make progress toward relocating I-15 Exit 119 to US-20 and realign US-20 through Idaho Falls to address safety and congestion concerns. Funding will allow for the purchase of private property for future construction.

With these projects now included in the draft Idaho Transportation Investment Program (ITIP), the public will have the opportunity to give feedback on this project and the department’s full list of planned projects from 2026-2032 during the annual comment period in July. Then the draft ITIP will be presented to the board for approval in September.

The board’s action today reflects continued investmenttargeting congestion and capacity in major corridors that were previously funded by TECM bondsas authorized by the Idaho Legislature. In East Idaho, TECM funds allowed for the construction at the South St. Anthony Interchange, which was previously unfunded.

This project and others were identified because they are existing high-priority corridor needs that will improve traffic flow and increase safety.

US-20 Exit 320 northbound ramp into Rigby closed Monday- Wednesday, June 11

Roadway, ramp and bridge at US-20 Exit 320 South Rigby, Idaho.

Traffic leaving U.S. Highway 20 to access South Rigby will be detoured on Monday through Wednesday, June 11, while the exit is closed for bridge repairs. The closure will be in effect from 8 a.m. to 5 p.m. and last until complete on Wednesday.

Travelers can take Exit 322 (North Rigby) or Exit 318 (County Line) as detours. Those leaving Rigby to get on to US-20 will still be able to use the southbound ramp at Exit 320 toward Idaho Falls as normal.

This closure will be noted on the Idaho 511 app and at https://511.idaho.gov.

Seven-person crash in Southeast Idaho caused by impaired driver; officials urge DUI education

Flowers laying on the dirt beside a road

The Idaho State Police (ISP) and the Idaho Transportation Department (ITD) urge drivers to make safe, sober choices behind the wheel following confirmation that the at-fault driver in a recent fatal crash on U.S. Highway 20 near Henry’s Lake had a blood alcohol content of 0.20 — more than twice the legal limit of 0.08.

The May 1 crash on one of the main corridors to Yellowstone National Park, which claimed the lives of seven people, occurred just as Idaho entered the 100 Deadliest Days — the period between Memorial Day and Labor Day when traffic fatalities typically rise due to increased summer travel, holidays, and impaired driving. Law enforcement and transportation officials say this preventable tragedy underscores the consequences of impaired driving.

“This tragedy should be a wake-up call,” ISP Captain Chris Weadick said. “No one plans to cause a crash or take a life when they get behind the wheel, but choices have consequences. Impaired driving isn’t just illegal — it’s deadly. If you see someone unfit to drive, speak up. Lives depend on it.”

Alcohol-related crashes remain one of the leading causes of traffic deaths in Idaho.

“Idaho’s roads are especially busy during the summer,” ITD Operations Manager Bryan Young said. “With more construction, increased travel, and an influx of visitors, we’re seeing more families and more drivers on the road. It only takes one impaired driver to change lives forever. This is a preventable problem, and it starts with each of us making responsible choices.”

DUI Prevention Tips

Plan ahead: If you plan to drink, arrange for a designated driver, rideshare, taxi, or public transportation.
Always buckle up: Seatbelts save lives and reduce injuries, though they do not replace the need for safe driving.

This summer, ISP and ITD are partnering to strengthen DUI enforcement and expand public outreach. We ask everyone to help protect lives by staying sober behind the wheel. The public is encouraged to report suspected impaired driving by calling *ISP (*477) or 911 if they observe erratic or dangerous behavior on the road.

Lane restrictions and closures for sign installation at US-20 Rexburg exits happening this week and next

A drill rig and other equipment, as well as orange traffic control devices, at US-20 Exit 333 while work is being conducted.

REXBURG— One lane and full closures at Exits 332 and 333 off U.S. Highway 20 in Rexburg are ongoing today and into next week. These restrictions are required so contractors can drill deep foundations for the large overhead signs that will soon be the finishing touch on the Diverging Diamond Interchanges completed last fall.

Both of these Rexburg exits will see one lane closures in the areas where drilling work is occurring. Traffic control will move with equipment and the road fully open wherever possible.

Next Monday, May 19 and Tuesday, May 20 Exit 333 will be fully closed overnight from 7 p.m. to 7 a.m. ITD and contractor partners are working through the night so traffic can flow as usual through the daytime hours.

Large equipment, including a drill rig to reach the required 18-foot foundation depth, will need to be in the roadway underneath US-20 for work at both locations, reaching across and over the median concrete barriers. To keep everyone safe and be able to swiftly clean up any water or debris that the drilling creates, lane restrictions and closures have been deemed essential. ITD and contractor partners are committed to completing the work as quickly as possible to cause the least amount of traffic disruption.

“The foundation for the bridge and cantilever posts that will hold the large overhead signs has to be particularly deep,” Resident Engineer Curtis Calderwood stated. “We want them to be secure and have integrity in the wind. This is pretty well the last holdout for getting the exits truly finished.”

These restrictions and closures will be noted on the Idaho 511 app and at 511.idaho.gov.

ITD Island Park foreman addresses multi-fatality crash

ITD Ashton/ Island Park foreman Ryan Wright at the site of a multi-fatality crash on US-20 near the Idaho/ Montana border.

Tragedy is, just that, tragic. The need and desire for reverence is legitimate. Difficult and hallowed situations can also cause strength, character and work ethic to shine admirably.

In sorrow for the lives lost during the crash that this article refers to, and hope that others who can relate will know they are not alone, we share the story of our role in the response.

Idaho State Police and the Idaho Transportation Department in East Idaho have a history that speaks for itself— ISP Lieutenant Marvin Crain and his troopers don’t hesitate to rely on ITD because the partnership has been proven time and time again. ITD operations and maintenance personnel across East Idaho are used to working beside ISP, ready to assist on scene as valuable first responders and traffic control.

Such was the case on the evening of Thursday, May 1, for a multiple fatality crash on US-20 at milepost 399. ITD Ashton/ Island Park foreman Ryan Wright has been in his role for the past 15 years and is an integral part of the small communities he serves. He heard about the incident just after it happened. Knowing it was blocking both north and southbound lanes, he sent his Island Park crew to direct traffic before ISP ever called. Wright then got in his own truck and headed to the scene personally.

“I don’t know what frame of mind a guy goes into it with. I can’t say you get used to it because you don’t,” Wright emphasized. “It’s just something we have to do. I guess it’s just work mode.” He said he tries to keep his crew members from having to be right in the thick of things during crash responses.

Once there, ISP spoke with Wright to request an additional flagger farther south. An Ashton crew member was called and showed up to fill that role. Wright himself pitched in to help however he could, knowing the Fremont County Coroner personally and working alongside the familiar ISP folks involved.

Wright and his crew members were on scene and assisting until the crash was cleared around 2 a.m.

“It’s when you get home and the adrenaline goes down and you start thinking,” Wright said. “The visions in your head you just don’t get rid of.”

East Idaho ITD leadership and Safety Officer Ronnie Butler made contact personally to get CISM, the Critical Incident Stress Management team that exists in each ITD district, available and ready for Wright and his crew. The individuals who are part of a CISM team are trained to offer a listening ear, help manage expectations after a traumatic event, and connect employees to the services needed. Each member is interviewed before joining the team and has related experience of their own.

“I’m not sure why I’ve always been able to handle it because I’ve seen some terrible wrecks,” Wright added. “We each deal with stuff our own way. I’ll usually call another foreman. We have each other.”

In the time since the crash, Wright has had to re-visit the site to assess damage and determine what needs done to ensure the continued integrity of US-20 near the Montana border. This road is the connection to the western entrance of Yellowstone National Park. ITD crews will conduct mastic and grader operations in the coming weeks as soon as investigations allow.

To our ITD operations and maintenance crews across the state, your contributions as first responders and the ones who pitch in during traumatic incidents do not go un-noticed. Thank you for your strength—you are appreciated and of such great worth.

Resources will always be available to help after an incident. Any ITD employee struggling as a result of work or on a personal level, don’t hesitate to contact your CISM representatives—they are happy to help and located to be able to respond immediately. You are not alone.

East Idaho travelers will see even more improvements to US-20

Orange traffic control barrels and lights along US-20 in east Idaho as traffic moves beside.

RIGBY—Exploratory drilling along U.S. Highway 20 from Idaho Falls to Rigby, as well as pavement replacement within the active roadway north of Rexburg, begins Monday. The Idaho Transportation Department is urging travelers to be aware of equipment and crews through these particularly busy areas.

“Last year, we had three near miss occurrences as we were drilling on US-20 near Idaho Falls,” ITD Geologist Shawn Enright said. “We want people to be particularly aware so we can make sure everyone gets home at night and the work gets done too.”

Over the next three weeks, contractor partners will have drill rigs and traffic control in operation near the ramps, overpasses and canal crossings from Interstate 15 Exit 119 in Idaho Falls to Rigby to gather data for potential future widening of US-20. Work will happen within the shoulder or roadside.

More efforts to improve US-20 from North Rexburg Exit 337 to Driggs/ Jackson Exit 339 are also beginning Monday and will continue throughout the next three weeks. Contractor partners will be repairing the worst sections of roadway to provide a smoother ride for motorists.

The northbound ramp to access US-20 at Exit 337 will be closed through the day on Tuesday, April 29. Once work has progressed north, motorists will see closures of the northbound on-ramps at Sugar City/ Salem Exit 338 and Driggs/ Jackson Exit 339. Each closure is expected to last no more than a few days and will only remain through daytime hours.

This work will be noted on the Idaho 511 app and 511.idaho.gov. Drive aware and drive safe while crews make Idaho’s roads better.

Look out for crews and traffic control as spring road work begins across East Idaho

ITD crews perform crack sealing repairs on I-15. Men are wearing hi-vis yellow and operating handheld equipment at the back of a small crack sealing trailer.

RIGBY— With the onset of spring, over the next several months the Idaho Transportation Department and contractor partners are crack sealing, repairing potholes, removing hazardous trees and conducting more substantial improvements to ruts and bumps in the roads from Salmon to Driggs and the Montana state lines to Idaho Falls.

Crack sealing is underway on Interstate 15 from Idaho Falls to Dubois, as well as State Highways 33 and 47. This work involves a mobile one-lane restriction that follows workers’ progress. ITD crews fill minor cracks in the roadway with a strong, sticky tar that serves to keep water from getting under the surface and making the damage worse. This must be done in spring during cooler temperatures and dry conditions, and then the repair effectively expands through warmer months.

Flagging operations will be in place temporarily on state highways across east Idaho as ITD performs mastic pothole repair. Expect flagging delays to be less than 15 minutes where this work is occurring. Mastic work uses a hot-applied rubber and asphalt combination that is highly effective at sealing up more substantial damages in the road. These fixes must also be done in dry conditions and specific temperatures seen during the spring. Crews time work before or after peak travel times, even at night as needed.

On U.S. Highway 20 between Rexburg and St. Anthony, crews will be working to mill off the surface of the road in 1,500-foot stretches or less and then overlay new pavement. Expect to see one lane closures and speed reductions where this is occurring.

Hazardous tree removal will also begin this spring on U.S. Highway 93 between Challis and Salmon. ITD crews can sometimes work off the roadway, though flaggers will be in place as needed, with one lane restricted in 15-minute increments. The removal of dying and diseased trees will improve errant driver safety recovery zones, wildlife visibility and fire protection widths. This effort will continue through the spring and into the summer months.

Other routine spring maintenance work like shoulder repairs and delineation enhancements are also ongoing. Drivers should be aware of these smaller work zones, slow down and move over to help everyone stay safe. Download the Idaho 511 app or visit tps://511.idaho.gov/ to stay up to date on where road work is occurring across Idaho.

Final full closure for US-20 Rexburg interchange starts tomorrow

US-20 Exit 333 at Rexburg, road closed sign in place with construction equipment surrounding

U.S. Highway 20 Exit 333 for Main Street in Rexburg will fully close beginning tomorrow. This closure allows crews to complete final paving operations and marks the last time Rexburg exits are expected to close for the construction of new diverging diamond interchanges. Exit 333 will be re-opened as soon as paving and striping work is finished, on or before October 29.

“Our goal was to have these projects completed by late fall and that really is going to happen,” Project Manager Conner Huffaker said. “We’re so grateful to the Rexburg community for their support and patience.”

After re-opening, construction efforts at Exit 333 will be largely off the roadway, with only limited lane closures from that point on. Motorists can expect some interruptions as work continues toward final completion, though they will be short lived.

With construction efforts winding down, motorists will also see improvements to timing for the traffic signals at both Exits 332 and 333. Engineers will make signal adjustments until the movement of the new interchanges is ideal for typical traffic flow.

Since March, the Idaho Transportation Department and contractor partners have been working to complete the massive undertaking of rebuilding Exits 332 and 333 in Rexburg. Both exits are now operating diverging diamond interchanges that are expected to resolve former traffic concerns in the Rexburg area.

US-20 South Rexburg Exit to close starting Monday

Road closed signs at Exit 332 on US-20 in Rexburg.

U.S. Highway 20 Exit 332 for University Boulevard in Rexburg will fully close starting Monday, September 30, for crews to complete final paving and striping operations. Work is not expected to take more than a few days, and the exit will be re-opened as soon as it is completed.

This closure was purposefully scheduled during Madison School District’s harvest break to least affect traffic. Detours include Exit 328 (Thornton), Exit 333 (Main Street) and Exit 337 (North Rexburg). After re-opening next week, construction work at Exit 332 will be minimal and off the roadway.

Construction does continue at Exit 333, with one lane running in each direction. These projects to create safe and efficient diverging diamond interchanges at both Rexburg exits are still expected to be complete later this fall.

For more information about this project, visit itdprojects.idaho.gov/pages/us20rexburg. Drivers can also use the 511 app to see current status on this and other Idaho projects.

US-20 Exit 333 in Rexburg re-opens

Aerial map and graphic descriptions of how to drive the diverging diamond traffic pattern at Rexburg Exit 333

REXBURG— U.S. Highway 20 Exit 333 in Rexburg will re-open Thursday night with a new diverging diamond interchange in place. This exit has been closed since late July so the Idaho Transportation Department and contractors could construct the new road design and complete vital underground infrastructure work.

The re-opening comes in time for an increase of traffic as university students arrive in Rexburg for the fall semester. All lanes of traffic will be open and construction efforts remain off the roadway at both Exit 332 (University Boulevard) and Exit 333 (Main Street) through this weekend to accommodate this influx.

“There really is a light at the end of the tunnel in Rexburg,” ITD Project Manager Conner Huffaker said. “We’re excited to be giving people some relief from construction and know that these new exits will do a great job of keeping everyone safe and moving better. Thank you for bearing with us.”

Motorists and citizens should be aware that construction efforts will continue again next week and through the month of October. Intermittent single-lane closures will be in place, with traffic still able to move through the interchanges. Impacts will be noted on 511.idaho.gov.

University Boulevard Exit will fully close again during the week of September 30 through October 4 to allow crews to add a final layer of pavement. This timeframe has been selected in coordination with when Madison School District is out of school for harvest break. Work on both exits is on track to be completed late this Fall. For further details about this project and to watch a video on how to drive the new diverging diamond traffic pattern, visit itdprojects.idaho.gov/pages/us20rexburg.