The Idaho Transportation Department (ITD) will close the westbound on-ramp (heading toward Boise) at the I-84 South Jerome Interchange (Exit 168) on Tuesday, May 28. The ramp will remain closed for a few months while crews build the new westbound on-ramp.
Traffic will be detoured to the Main Street/Highway 25 Interchange (Exit 165). Motorists will be directed north on S Lincoln Avenue, west on W Avenue D, north on S Birch Street and west on W Main Street/Highway 25. Click here to see a detour map.
Motorists can continue to expect intermittent local road closures, I-84 lane closures, traffic shifts and ramp changes throughout the duration of the project. Construction is anticipated to be completed in 2026.
Details about the I-84 South Jerome Interchange project are available at itdprojects.idaho.gov/pages/sjeromeic or by texting 84JTF to 1-866-483-8422.
Drivers should check 511.idaho.gov before traveling to plan for impacts from this project and other work zones.
The Idaho Transportation Board approved a resolution today to begin next steps to enhance Magic Valley regional mobility including consideration of a third Snake River crossing near Twin Falls.
ITD was approved to utilize up to $9 million to initiate recommendations presented based on a feasibility study developed with stakeholder interviews, traffic evaluations, design reviews, and close coordination with the Third River Joint Powers Board, the city of Twin Falls, and the Magic Valley Metropolitan Planning Organization.
ITD Chief Deputy Director Dan McElhinney stated, “It takes strong regional partnerships that are united and persistent to bring a major bridge project to reality. All are here today in teamwork with ITD. There are significant, complicated environmental and design work ahead that will likely require creative funding solutions partnering over the next few years.”
The Snake River Crossing project will follow the National Environmental Policy Act procedures over the next two years with ITD engaging many stakeholders, initiating field studies and preliminary design on alternatives to consider. Once a NEPA document is complete a preferred alternative can be selected, as efforts continue to identify funding for construction.
In addition to the potential for a new bridge over the Snake River, the process will include consideration of other improvements to ease congestion and enhance connectivity, such as:
- Widen existing bridges on US-30 and SH-46.
- Extend SH-79 or SH-25 south of Jerome across the canyon to US-93.
Other projects will also move forward, including:
- Widening or replacement of the SH-50 Hansen Bridge and widening five miles of SH-50.
- Traffic mobility improvements to the intersection of US-93 (Pole Line Road) and Blue Lakes Boulevard.
ITD District 4 Engineer Jesse Barrus said, “All of these near and long term improvement considerations will help provide this growing region with important mobility alternatives as our existing transportation system continues to experience more traffic demand.”
The Ohio Gulch traffic signal on State Highway 75 was completed and activated on April 11. Over the past several weeks, the Idaho Transportation Department has gathered data to help refine the timing plan of the signal in both directions.
Feedback provided by the community helped pinpoint specific issues drivers experienced and assisted ITD in adjusting the signal timing plan which we expect to result in a reduced wait times and less congestion on SH-75.
ITD will continue to monitor the signal and make any additional adjustments as needed.
For more information about ITD projects and traffic information check out Idaho 511 either online, by phone, or through the app for smart devices.
The new traffic signal installed on State Highway 75 at Ohio Gulch Road north of Hailey is complete and will go live on Thursday, April 11.
The number of lanes remain the same and align with the signal lights. Drivers should be aware that the signal is there and active and be prepared to stop if needed.
The traffic light was originally slated to go live on April 15th, but crews were able to complete the project early.
For more information about projects in your area go to 511.idaho.gov.
Construction to upgrade the Heyburn Interchange (Exit 211) is scheduled to begin Monday (March 11), adding another work zone on Interstate 84 as work began at the nearby Burley Interchange (Exit 208) in late February. Both multi-year projects include replacing the interchanges, with funding coming from Governor Little’s Leading Idaho program.
The interchanges were built in the 1960s. Feedback from open houses held in 2022 and 2023 led to the selection of new designs that are safer and capable of handling more traffic.
On Monday, crews will mobilize into the area and begin setting up the work zone. Nighttime lane closure are not anticipated until early April when they place barrier and start removing vegetation in the median.
Upgrading the interchange will take until late 2026 and is expected to cost $90.1 million. Drivers can generally expect:
- All lanes on I-84 will be open during the day. Drivers will be shifted many times to run on temporary pavement to keep traffic flowing.
- Nighttime lane closures on I-84 as needed.
- Nighttime ramp closures as needed.
- Lane closures and traffic shifts on State Highway 24 where it crosses underneath the interstate.
The new interchange will be shifted to the east and feature longer ramps to access I-84 and two new signals to control ramp traffic. The existing loop ramps will be removed, and the I-84 bridges will be replaced. View the detailed design here. Download a drone shot of the interchange before construction.
This year, the contractor will work on building temporary lanes in the median to shift traffic onto, start reconstructing westbound lanes with concrete and form embankments for future ramps.
Nighttime lane closures initially anticipated at the Burley Interchange in late February have been delayed by weather. To be alerted when those lane closures begin, visit the project website to sign up for email updates. Live traffic impacts can always be checked at 511.idaho.gov.
The Leading Idaho program allows ITD to accelerate project timelines to address rapid growth and build critical infrastructure today that would otherwise take many years to fund and build.
Next week work will resume at the Interstate 84 Kimberly Interchange as crews continue to rebuild it to handle more traffic.
Drivers should plan for daytime lane closures on I-84 as early as Monday (March 11), pending weather conditions.
Traffic will remain shifted to the newly constructed northbound lanes on the bridge going over the interstate. Over the next two weeks, crews will demolish the southbound lanes of the overpass.
Lane closures on both I-84 and SH-50 will remain in place for several months, even after bridge demolition is complete. Throughout construction drivers can expect reduced speed limits, traffic shifts and short-duration ramp closures.
Reconstruction of the interchange includes additional space for turning lanes, sidewalks and a pedestrian fence on the SH-50 bridge. It is also designed to provide extra room for potential future expansion of I-84 underneath the bridge, though nothing is planned at this time.
Work began in June 2023, and since then crews have rebuilt half of the SH-50 bridge and part of all the ramps as well as repaved SH-50 near the bridge. For more information visit I-84/SH-50: Kimberly Interchange | ITD Projects (idaho.gov).
Construction should wrap up in the fall of 2024. Travelers are urged to download the 511 app or visit 511.idaho.gov to stay up to date on traffic impacts.
Construction to upgrade the Burley Interchange (Exit 208) on Interstate 84 is set to begin next week, and the nearby Heyburn Interchange (Exit 211) is scheduled to begin soon after. Both multi-year projects include replacing the interchanges, with funding coming from Governor Little’s Leading Idaho program.
Both interchanges were built in the 1960s. Feedback from open houses held in 2022 and 2023 led to the selection of new designs that are safer and capable of handling more traffic.
Work will begin at the Burley Interchange on Monday, Feb. 26, with crews bringing in equipment and setting up the work zone. Drivers should plan for nighttime lane closures while they place barrier and start removing vegetation in the median.
Upgrading the interchange will take until late 2026 and is expected to cost $85.1 million. Drivers can generally expect:
- All lanes on I-84 will be open during the day. Traffic will be shifted many times to run on temporary pavement to keep traffic flowing.
- Nighttime lane closures on I-84 as needed.
- Nighttime ramp closures as needed.
- Traffic shifts on State Highway 27 crossing over the interstate.
The new interchange will feature longer ramps to access I-84 and two new signals to control ramp traffic. The two existing westbound on-ramps will be consolidated to one ramp, and all bridges will be replaced. View the detailed design here.
This year the contractor will work on building temporary lanes in the median to shift traffic onto, start reconstructing westbound lanes with concrete and forming embankments for future ramps. Crews will also begin to replace the westbound bridge over the canal to the west of the interchange and the northbound bridge for SH-27 traffic over the interstate.
To stay up to date, visit the project website to sign up for email updates. Live traffic impacts can always be checked at 511.idaho.gov.
Construction at the nearby Heyburn Interchange is expected to start in mid-March.
The Leading Idaho program allows ITD to accelerate project timelines to address rapid growth and build critical infrastructure today that would otherwise take many years to fund and build.
The Idaho Transportation Department has extended the online comment period for a project to improve State Highway 75 between Bellevue and Broadway Run. Community members are encouraged to visit the online open house and submit feedback until Feb. 28 at SH-75: Bellevue to Broadway Run | ITD Projects (idaho.gov).
Plans include widening SH-75 to two lanes in each direction and improving specific intersections between McKercher Boulevard and Timber Way, and between Birch Street and Fox Acres Road. Plans also include improvements to the Gannett Road intersection and transit improvements at the Broadway Run intersection.
ITD hosted an in-person open house on Jan. 30 in Hailey and originally planned to close the comment period today.
“We had an outstanding turnout at the open house in January with 180 people showing up,” Project Manager Mark Campbell said. “We want to ensure all community members have the opportunity learn about the project and send in their feedback, so we’re accepting comments for another two weeks.”
Final design plans are expected to be completed later this year. Details about the project are available at itdprojects.idaho.gov/pages/sh75bellevue.
The Idaho Transportation Department (ITD) is beginning construction on Feb. 12 to replace the South Jerome Interchange on I-84 (Exit 168). This multi-year project includes upgrading the current interchange, installing new traffic signals, adding a sidewalk and bike lane to the Lincoln Avenue Bridges and improving local roads.
In 2024, crews will begin improvements to Bob Barton Road, East Frontage Road North and Lincoln Avenue. Flagging is expected to occur on Bob Barton Road the week of Feb. 12 so crews can begin irrigation work, and the road will close for approximately three months starting in early March so it can be repaved. East Frontage Road North will also be closed in late February.
During the rest of 2024, crews will build temporary eastbound and westbound off-ramps, which will be used when constructing the permanent off-ramps. Work will also begin on the new bridges, the eastbound off-ramp and the westbound on-ramp.
During construction, motorists should expect:
- Most work will occur Monday – Saturday from 6 a.m. to 8 p.m.
- Intermittent nighttime closures on I-84 will be necessary for bridge work, girder placement and traffic shifts.
- Traffic shifts and ramp changes will occur.
- Road closures will occur on Lincoln Avenue, Bob Barton Road and East Frontage Road North in March. Detours will be in place.
- Speed limits will be reduced.
The South Jerome Interchange was originally built in 1966 and has reached the end of its design life. The new interchange will increase capacity and improve safety on the interchange to serve South-central Idaho for years to come.
Construction is anticipated to be completed in 2026. To sign up for project updates:
Western Construction, Inc. is the contractor for this $54.4 million project.
