Idaho drivers are urged to plan ahead when traveling north of Eagle this summer as the Idaho Transportation Department (ITD) is advancing several projects along State Highway 55. These projects include lane closures and reduced speeds in various locations between Eagle and New Meadows.
“Each of these projects is intended to improve traffic flow and safety along this regional route. We look forward to a safer, smoother State Highway 55 after these projects are complete,” District 3 Engineer Jason Brinkman said.
The projects include:
Little Goose Creek Bridge (Construction: June 2024 – late 2024)
ITD will begin replacing the Little Goose Creek Bridge today along SH-55 near Last Chance Campground in New Meadows. SH-55 will be reduced to one lane in the area with flaggers and a traffic signal during construction. Drivers should expect delays. Learn more and sign up for construction updates on the project website.
SH-55 Smiths Ferry to New Meadows chip seal (Construction: July 2024 – fall 2024)
This July ITD will start applying a chip seal to several areas of SH-55 between Smiths Ferry and New Meadows. This project will extend the life of the pavement. The highway will be reduced to one lane with pilot cars where crews are working. Drivers should expect delays. In order to see where crews are working, travelers should sign up for updates on the project website.
Rainbow Bridge (Design: 2024-2026)
ITD is currently conducting soil and rock sampling in the area of the Rainbow Bridge for a project to build a new bridge over the North Fork of the Payette River in Valley County. Drivers can expect 15-minute delays on weekdays in June. To learn more about the project visit https://itdprojects.idaho.gov/pages/rainbowbridge.
SH-55 DMS Sign (Construction: fall 2024)
ITD will install a dynamic message sign on SH-55 between Round Valley and Cascade. The new message board will notify motorists of detours or incidents along SH-55. Minimal delays expected. Any traffic impacts during the installation will be posted at 511.idaho.gov.
Flaggers will direct traffic at the Banks-Lowman intersection on all Sundays in July. The project team is planning to install an interim traffic signal at the busy intersection later this year.
SH-55 Fleming Creek Bridge Replacement (Construction: fall 2024 – late 2025)
This fall ITD will begin replacing the Fleming Creek Bridge on SH-55 approximately four miles south of Banks. SH-55 will be reduced to one lane in the work zone with speed limit reductions during the week. Details will be posted to itdprojects.idaho.gov later this summer.
SH-55 State Street to Horseshoe Bend Rehabilitation (Construction: fall 2023 – fall 2024)
ITD is milling and resurfacing SH-55 between State Street in Eagle and Horseshoe Bend. Work is expected to be complete this fall. Details are available on the project website. Drivers are encouraged to slow down in the work zone as there have been too many close calls with flaggers.
It’s important for motorists to plan ahead this summer by checking traffic impacts on their route at 511.idaho.gov.
The Idaho Transportation Department is advancing several projects this summer along State Highway 55 north of Boise.
The Idaho Transportation Department (ITD) is applying a hot chip seal to more than 100-lane-miles in the heart of Boise with minimal impact to drivers, as the work will all be done at night. This new innovative approach to chip sealing highlights ITD’s dedication to embracing new technologies that lessen impacts to users.
Unlike a regular chip seal, the hot chip seal on this project allows all work to be conducted at night. Traditional chip seal uses oil heated to around 150 degrees that can be applied during daytime high temperatures. Hot chip seal requires oil to be heated to 300 degrees so it can be applied during nighttime lows. Another key advantage is that drivers can use the roadway within 30 minutes of chip sealing, compared to the 24-hour wait required by regular chip seals. This high-temperature process not only extends the pavement’s service life but also minimizes disruptions to businesses and motorists.
Crews are beginning work on Broadway Avenue tomorrow, followed by State Street between State Highway 16 and Linder Road, and Chinden Boulevard. Work is weather dependent and can change. The project is expected to finish late summer of this year.
During construction motorists can expect:
Work on one section of road at a time
Nighttime work from 9 p.m. to 6 a.m.
Access to residences and businesses will be maintained at all times
Lane closures, with at least one lane open in each direction
Shifting traffic patterns
Flaggers in the roadway
Speed limits reduced
In anticipation of this project, last summer ITD applied the first ever hot chip seal on two miles of State Highway 21 to ensure results could be replicated in a busier environment. These projects are the first in the state to use this process.
The Idaho Transportation Department (ITD) is asking drivers to slow down and watch for construction crews on State Highway 55 south of Horseshoe Bend due to recent dangerous driver behavior in the area.
“There have been a couple of close calls in the work zone with drivers ignoring the flagging crews and the posted speed limit. Safety is our highest priority, so we really need people driving in the area to pay attention,” Project Manager JD Lewelling said.
Ongoing work includes milling and resurfacing the roadway for a smoother driving experience. Safety improvements include replacing guardrail, as needed, throughout the project area.
Construction activity is currently focused on the highway approximately four miles north of Avimor to just south of the Payette River Bridge in Horseshoe Bend. The project also includes constructing a bridge to convey both vehicle and pedestrian traffic under SH-55 at the north end of Avimor. This work is being funded by Avimor.
ADA improvements at SH-55 intersections with Hill Road, Floating Feather Road, and Beacon Light Road will be completed later this summer.
Construction is expected to be complete by this fall.
A major traffic shift will begin Saturday as the Idaho Transportation Department (ITD) prepares to widen westbound Interstate 84 between the Centennial Way and Franklin Road interchanges.
All traffic will shift to the eastbound lanes between the Centennial Way and Franklin Road interchanges. The traffic shift will be completed over two weekends in June. Motorists should anticipate I-84 ramp closures, detours and lane restrictions. These new traffic patterns will remain in place until summer 2025.
Once the traffic shift is complete motorists can expect:
All lanes of I-84 will be on the eastbound side. Two lanes will be open in each direction, but lanes will be narrower.
Traffic will use temporary off-ramps at Centennial Way and 10th Avenue (Exits 27 and 28). Temporary ramps will be shorter and may have fewer lanes than current ramps.
Frontage Road and Hannibal Street will be reduced to one-way traffic with flaggers.
Intermittent closures on 10th Avenue will begin in July.
The pedestrian overpass over I-84 will be closed and detoured to 10th Avenue in late summer.
This project will increase capacity and improve traffic flow for years to come.
A major Interstate 84 traffic shift will begin on Saturday June 8 as ITD prepares to widen westbound I-84 between the Centennial Way and Franklin Road interchanges.
The Idaho Transportation Department (ITD) will begin soil and rock sampling this June for a project to build a new bridge over the North Fork of the Payette River in Valley County. The project will address plans for the nearby Rainbow Bridge that has served Idaho travelers for nearly 100 years.
The sampling will require test drilling in 18 locations around the existing bridge. Preparations are expected to begin next week. Drivers can expect up to 15-minute delays on weekdays in June for the drilling and associated preparations. Work will stop for the weekend each Friday at noon.
Prior to the drilling, ITD will remove trees and vegetation near each drilling location to allow a helicopter to safely lower equipment. The ground will be re-seeded after drilling. Results will be used for designing the bridge foundation, supports and retaining walls along State Highway 55.
The current Rainbow Bridge was constructed in 1933 and no longer meets standards for state highway bridges. ITD began environmental and design work this spring for a new bridge adjacent to the current bridge. The project will include a decision about the future of the existing bridge.
“We intend to approach this project with a high level of transparency, sensitivity and community involvement,” ITD Resident Engineer Dan Gorley said. “Public input will be a key consideration in the final recommendation for the new bridge and the existing bridge.”
ITD will host community open houses and a stakeholder working group this July. Additional community involvement opportunities will be scheduled later this year. To request an invitation to future meetings, please email info@sh55rainbowbridge.com or visit https://itdprojects.idaho.gov/pages/rainbowbridge.
The project is planned for construction in 2027 or 2028.
Two projects are set to begin Monday to create a center mumble strip and add a passing lane on State Highway 33. Motorists will experience lane closures and delays at various times through the summer.
A mumble strip along the center line of SH-33 will be added to increase safety and avoid collisions from the intersection of State Highway 32 to the Wyoming state line. The mumble strip will not be added within the city limits of Tetonia, Driggs and Victor. All striping will also be redone. This project will close one lane in the current work area and be complete within two weeks. Mumble strips are similar to rumble strips but are rounded so noise is heard by the driver and less by surrounding homes and businesses.
Work on the addition of a passing lane, center and right turn lanes and the realignment of Baseline Road along SH-33 between Victor and Teton Pass also begins Monday. Drivers should plan for delays between 15 and 30 minutes as temporary signals will alternate traffic through the work zone from mileposts 151 to 153. Crews will remove outdated concrete cattle underpasses and widen the road to ultimately give motorists a chance to pass slow-moving vehicles before entering Teton Pass. This work will be complete mid to late-September.
Motorists should remember to use caution and be patient through construction zones as the Idaho Transportation Department and contractors work to make the road better for the future. Stay up to date on status of these projects and others by visiting 511.idaho.gov, calling 5-1-1 or downloading the app.
Construction work at the intersection of U.S. Highway 26 (Yellowstone) and Anderson/Lincoln Road in Idaho Falls begins this weekend and will continue June 8-9. Anderson/Lincoln will be closed to through traffic and no left turns will be allowed off Yellowstone. Roads will re-open and traffic resume as normal on Sunday night both weekends. The intersection was also a work zone last year and was unable to be successfully completed with the onset of winter weather.
The City of Idaho Falls requested that the Idaho Transportation Department arrange to have work done over weekend time frames to affect the fewest commuting drivers. ITD is working with the contractor to ensure the most minimal impact while fully completing improvements at the intersection. It is the project goal to complete one half of the work this weekend on June 1-2, and the other half over June 8-9 to ensure the least amount of closure and detours possible. Any changes to that schedule will be communicated if necessary.
Motorists will see the current road surface being milled up and removed to put stronger asphalt in place. Stone matrix asphalt (SMA), a newer construction alternative than the concrete previously used at this intersection, will be laid in solid segments to avoid weak joints and give the new section of road as much as a 20-year life cycle.
Remember to use caution and be patient through construction zones as the Idaho Transportation Department and our contractor partners work to make the road better for the future. Stay up to date on status of this project and others by visiting 511.idaho.gov, calling 5-1-1 or downloading the app.
The closure planned at the Simco Road Interchange for last week has been rescheduled for today (June 3).
The westbound off-ramp of Interstate 84 at the Simco Road Interchange will be closed for construction today beginning at 6 a.m. and will reopen tomorrow. Vehicles using the westbound off-ramp will be rerouted to Mayfield (Exit 71).
At the end of this week, traffic on the eastbound lanes will shift to the left before Exit 71. The westbound lanes will remain open with intermittent daytime closures. The Simco Road Bridge will remain open as one lane. Drivers can expect reduced speeds when approaching the interchange.
Construction began in July 2023 to replace the bridge over I-84, originally built in 1959. Work is expected to be complete this summer.
The Idaho Transportation Department reminds drivers to be patient, slow down and obey all posted signs in the construction zone. Travelers should check 511.idaho.gov before driving in the area.
5/28/2024 Original Story
The westbound off-ramp of Interstate 84 at the Simco Road Interchange will be closed for construction tomorrow and will reopen Thursday. Vehicles using the westbound off-ramp will be rerouted to Mayfield (Exit 71).
At the end of next week, traffic on the eastbound lanes will shift to the left before Exit 71. The westbound lanes will remain open with intermittent daytime closures. The Simco Road Bridge will remain open as one lane. Drivers can expect reduced speeds when approaching the interchange.
Construction began in July 2023 to replace the bridge over I-84, originally built in 1959. Work is expected to be complete this summer.
The Idaho Transportation Department reminds drivers to be patient, slow down and obey all posted signs in the construction zone. Travelers should check 511.idaho.gov before driving in the area.
On May 28 the Idaho Transportation Department will begin resurfacing U.S. Highway 2 starting at its junction with U.S. Highway 95 east to the Montana state line. This project will improve safety and the drivers’ experience with a smooth new surface.
Crews will begin at the junction and work east through fall, often during both daytime and nighttime hours. Traffic will be reduced to a single lane.
Pilot cars will be utilized to guide alternating lanes of traffic through the active work zone.
Drivers should anticipate delays in travel ranging from 15 to 30 minutes, and plan accordingly.
Throughout the course of this project, crews will be grinding down the top layer of asphalt and replacing the paved surface to correct deficiencies and soft spots from US-95 to the Moyie Bridge.
East of Moyie Bridge a more comprehensive restructuring process will take place beyond milling down through the base layer of the highway to fully reconstruct the road base and driving surface. This process—known as Cement Recycled Asphalt Based Stabilization, or CRABS—is both efficient and cost effective.
“We pulverize the existing asphalt, mix in cement to help stabilize and strengthen the mixture to use as a base, and then we pave over top of that,” Project Manager Megan Koski said.
The Port of Entry station at Three Mile Junction will also be reconstructed and is expected to experience intermittent, temporary interruptions of service as the asphalt is being reconstructed at their current location. As an alternate, people may contact the Huetter Port of Entry for permits, registrations, or questions at (208) 769-1551.
Travelers are encouraged to use the Idaho 511 system for updated traffic impacts through the construction season.
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.
