ASHTON – Beginning Wednesday, September 7 the next phase of the US-20 and SH-47 project at Ashton will begin. The contractor will periodically be blasting rock that is under the roadway between September 7 and September 13. The blasting will occur in the construction area and motorists should anticipate longer than normal delays.
In addition, there will be a change in traffic pattern to accommodate work at the intersection. SH-47 traffic will be shifted onto the north side of the road with the south side closed for construction. US-20 and SH-47 will remain open to traffic in all directions.
Motorist should take care to watch for equipment and workmen, follow all signs and flaggers, and reduce speeds to posted limits.
Questions and concerns can be directed to HK Contractors office at (208) 523-6600.
AMERICAN FALLS – The Idaho Transportation Department began repairs on two I-86 bridges in Power County this week. The Sunbeam Road and Seagull Bay bridges will both be receiving new roadway surfaces to protect the integrity of the bridges and improve safety. The first phase of the project will progress for one month while the eastbound bridges are resurfaced. The second phase will also last one month as the westbound bridges are similarly repaired. All work is scheduled to be completed by the end of October.
During construction traffic will be moved to one side of the Interstate prior to the bridges and some exiting traffic will be detoured. After the construction area is passed, traffic will cross back over to the regular side of the Interstate to proceed as usual. Motorists should watch closely for signs indicating lane changes, detours, and speed limit reductions.
During the current first phase, eastbound traffic is being crossed over to the westbound side of the Interstate prior to Sunbeam Road at American Falls. Traffic remains two-way on the westbound side of the Interstate until past Seagull Bay Exit 44. Therefore, eastbound Interstate traffic will not be able to use Exit 40 into American Falls and Exit 44 to Seagull Bay. Motorists should instead exit at the west American Falls / Rockland Exit 36 or the Rainbow Road Exit 49.
American Falls residents will still be able to enter I-86 toward Pocatello at the Exit 40 on ramp. They will progress eastbound until the Seagull Bay Exit 44 where they will detour through the exit and then re-enter the Interstate and merge with through traffic as it crosses back over from the westbound lanes.
Performing work on both bridges at the same time reduces costs and effects repairs in the same construction season. Once completed the new surfaces will be smoother and the bridge decks will be protected against further deterioration.
POCATELLO – Preliminary work on the Idaho Transportation Department’s project to rebuild the I-86/I-15 System Interchange is beginning this week. Originally built sixty years ago, the design needs to be updated to handle greater traffic volumes and to replace aging bridges that are reaching the end of their life. Joint venture contractors Sundt-Cannon is expected to begin moving equipment into the project area before the end of the week.
The scale of the endeavor is truly historic and took years to bring to fruition. When completed, approximately 900,000 cubic yards of excavation will be completed. In addition, about 225,000 tons of base material will be brought in; 111,000 tons of asphalt will be placed; and over 6,500 cubic yards of concreate will be poured. 70,000 square feet of retaining walls will also be built throughout the project area. Finally, ITD will build eight new bridges. Four of those will use precast concrete girders and four will have steel girders. In all, nearly 5,000,000 pounds of steel will be used in the bridges. Crews will work year-round for approximately three years to complete the project.
The two most significant changes motorists will see during construction are a detour for traffic travelling from I-15 northbound to I-86 westbound and the closure of the Chubbuck Road overpass.
In early August, northbound traffic from I-15 exiting west toward Chubbuck will be detoured through the Northgate Interchange and back onto I-15 South to then proceed to I-86 West. To maintain traffic for the anticipated 2-year construction of the project, the ramp will need to be lowered prior to beginning bridge construction. This necessitates the ramp closure and detour through the Northgate Interchange. This work should be completed by early September.
The Chubbuck Road overpass will be closed around August 1st, prior to the beginning of the school year, and will remain closed during the duration of the project. Construction will remove the existing bridge, excavate new embankments, and create bridges for I-15 to pass over Chubbuck Road. The final Chubbuck Road design will be easier and safer to navigate for motorists, bicyclist, and pedestrians. During construction motorists will be detoured through the Northgate interchange.
During the first phase of construction traffic from northbound I-15 intending to travel west will be detoured through the Northgate interchange.
While demolition of the Chubbuck Road overpass will not begin immediately, an important concern for the school district and other interested parties was altering bus routes and student driving routes after the beginning of the school year. This could cause unnecessary delays and confusion for buses, faculty, parents, and students.
“The school district had some real concerns about making a change during the school year and we are doing what we can to accommodate them for the safety of the students and smooth operation of the schools,” said project co-manager Zak Johnson.
The $112 million project to rebuild the system interchange is a massive undertaking that requires extensive coordination with many different parties. ITD has been in close contact with city leaders, ISP, the Bannock County Sheriff’s office, emergency response, schools, regional transit, and others to ensure the safety of Idaho citizens and motorists passing through Southeast Idaho.
An important question some in the community express is, why now?
“The aging bridges will continue to get closer and closer to the end of their design lifespan,” said project co-manager Greg Roberts, “They would still be functional, but weight limits would start to have to be imposed on truck traffic. That would negatively impact Pocatello’s economic future.”
That is an important concern for Idaho businesses. Large loads, called “mega-loads”, travel through the Gate City to Montana and west to other regions of Southern Idaho. Local manufacturing companies need to be able to move their products to their customers quickly and safely.
However, it is not just the age of the 1960’s bridges that is a concern. When the System Interchange was built there was almost no development on the east side of I-15. Today the Highland area has subdivisions, a high school, the fairgrounds, and the Wellness Complex. In addition, development at Northgate has begun and will result in even more traffic.
“We can only expect traffic volume to increase and with it congestion,” said Roberts. “That will cause the ‘weave’ between the Pocatello Creek onramp and the Chubbuck exit to get worse. Traffic entering, I-15 intending to head toward Chubbuck already has difficulty during peak times crossing all the way to the left to head west on I-86.”
The issue for drivers now is finding a gap to slip into so they can head west toward Chubbuck.
“That will only get worse if we do nothing,” added Johnson, “Gaps between cars will become smaller and smaller making it more difficult to safely merge. Drivers will be forced to make more aggressive lane changes to head to Chubbuck. That kind of situation increases collisions. We don’t want to wait until things become dangerous and people get hurt.”
Safety is a primary concern for project managers and the contractors as motorists prepare to drive through the work site. “These are our neighbors and family working out there,” said Roberts. “We do everything we can to make the worksite safe, but it’s really important that drivers follow posted speed limits, watch for lane changes and signs, and give other motorists space on the road.”
The Chubbuck Road detour will take motorists through the Northgate Interchange.
Both Roberts and Johnson have seen severe worksite accidents caused by inattentive drivers. In one instance a motorist followed a work truck directly into the work site. Unfortunately, deaths do occur and it is often the result of a motorist that do not take care in a work zone.
“It’s something that never leaves you,” said Johnson as he reflected on a fatality on a previous project. “We do everything we can to keep people safe, but when it happens it’s hard not to take it personally. We just ask everyone to please keep themselves, their families, and their neighbors safe while this project is being completed.”
Once completed, the new System Interchange will be safer and ready to carry the increased traffic volumes for the fastest growing state in America.
This project is partially funded with Transportation Expansion and Congestion Mitigation (TECM) funds as part of Governor Little’s Leading Idaho initiative. The 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.
This video describes how the new interchange will work and improve mobility and safety for the public – https://youtu.be/KRdVBAyXweA
The new design changes Chubbuck Road into an underpass with additional space for pedestrians and bicycle lanes.Vehicles travelling northbound from Pocatello Creek Road will merge with I-86 traffic on a new ramp. Both lanes will then meet with I-15 northbound traffic near Chubbuck Road.
When completed, westbound traffic from Pocatello Creek Road will pass under I-15 to merge with I-86.
ASHTON – As part of the construction work at the intersection of US-20 and SH-47 in Ashton, the contractor will be blasting rock under the roadway. The blasting operation will occur periodically between July 15 and July 19 in the closed portion of the roadway.
There will be traffic control flaggers on US-20 and SH-47 to manage traffic during these operations.
Motorists should anticipate longer than normal delays during this time. ITD asks all drivers to watch for equipment and workers, follow all traffic signs and flaggers, and reduce speeds to posted limits. It is essential during this operation that motorists keep themselves and workers safe.
The US-20 / SH-47 intersection project consists of a stoplight, new curb and sidewalks, storm sewer work, and pavement. Work is scheduled to be completed in October.
Questions can be directed to HK Contractors at (208) 523-6600.
EAST IDAHO – The Idaho Transportation Department (ITD) is asking for input on the just-released draft Idaho Transportation Investment Program (ITIP). The 2023-2029 ITIP is a seven-year master plan of the state’s transportation improvement projects. Everyone is encouraged to participate starting in July.
Projects can range from large-scale interstate improvements to smaller projects like the installation of a new guardrail. In all, the draft ITIP includes projects in all 44 counties and all modes of transportation. Projects were selected based on technical data, as well as input from local officials and residents.
A few of the major projects in East Idaho include:
I-15 Northgate to Fort Hall Widening – Widen the interstate to three lanes in both North and South directions, including replacement of outdated structures, drainage facilities, and interchange merge/diverge improvements.
US-20 Chester to Ashton Widening – This project will build a 4-lane divided highway with the addition of 2 new interchanges.
Blackfoot West Bridge Street bridge replacement – Replace the aging West Bridge Street Bridge over the Snake River in Blackfoot.
Chubbuck, Widening Park Lawn to Siphon Road – To provide additional capacity along Yellowstone Avenue between Park Lawn and Siphon. It will also allow for the addition of a traffic signal at the intersection of Yellowstone Avenue and Siphon Road.
A2 Highway improvements – This project will improve the A2 Highway in Clark County by widening the roadway, fixing soft spots, adding additional base and paving the roadway. This will include the replacement of culverts, and other minor drainage improvements.
SH-33 Teton County intersection improvements – This project will improve intersections and add turn lanes on SH33 from milepost 138.70 to milepost 149.40.
US-93 Pahsimeroi River bridge replacement – This project will replace the Pahsimeroi River bridge on US-93 in Custer County.
Comments will be taken from July 1-31 and can be e-mailed to ITDcommunication@itd.idaho.gov or mailed to:ITIP – Comments
Attn: Office of Communication
P.O. Box 7129
Boise, ID 83707
Paper copies of the ITIP will be provided upon request by contacting the Idaho Transportation Department (208) 334-8119.
All comments will be reviewed, incorporated into the ITIP where appropriate, and responses will be sent in September once the comment period has ended.
After approval by the Idaho Transportation Board in September, the ITIP will then be submitted to the Federal Highway Administration, the Federal Transit Administration, and the Environmental Protection Agency in October.
IDAHO FALLS – The Idaho Transportation Department is beginning two projects today along US-26 east of Idaho Falls. The first project consists of adding a 3-mile passing lane at Antelope Flat. The second project will add turning lanes into the rest area at the bottom of Clark Hill. Both jobs will take until October to complete.
While construction is underway at Antelope Flat there will be lane closures with flaggers to control traffic. For the Clark Hill project, ITD will keep one lane in each direction open.
Motorists are reminded to follow posted speed limits, obey flaggers, and drive cautiously through work areas.
ASHTON – Beginning July 6 the Idaho Transportation Department will commence work on two projects at Ashton. The first project, at the intersection of US-20 and SH-47 in Ashton, will consist of extensive work to improve safety and traffic flow. The second project will be a pavement overlay along SH-47 beginning near North Fremont High School and continuing to Bear Gulch.
The US-20 / SH-47 intersection project will consist of a stoplight, new curb and sidewalks, storm sewer work, and pavement. Work is scheduled to be completed in October. Traffic patterns will change periodically to allow for construction.
A public meeting will be held on Wednesday June 29, 2022 at 11:00 a.m. at the Ashton City hall for those that wish to discuss construction plans at the intersection and express concerns.
The paving project on SH-47 east of Ashton will last for approximately 15 days. Crews will be microsurfacing the roadway to improve and protect the road surface. During work there will be single lane closures and pilot cars to control traffic flow.
Motorists are asked to watch for workers and equipment, follow all traffic signs and flaggers, and reduce speeds to posted limits. Traffic control and safety devices will be changing often to accommodate construction activities.
Citizens with questions regarding the US-20 / SH-47 intersection can contact HK Contractors at (208) 523-6600.
Those with questions regarding the SH-47 microsurfacing project can call the Idaho Transportation Department District 6 office at (208) 745-7781.
Westbound traffic from Pocatello Creek Road will pass under I-15 to merge with I-86.
POCATELLO – The Idaho Transportation Department has accepted a $111.9 million winning bid by Sundt-Cannon, a joint venture, to rebuild the I-86/I-15 system interchange at Pocatello. Work is scheduled to begin mid-July and will continue for approximately three years as the interchange undergoes modernization.
The old interchange was built in the mid-1960s and the aging and obsolete bridges need to be replaced. In addition, Pocatello and Chubbuck have grown significantly to the north of I-86 and east of I-15. Through traffic has also increased resulting in more congestion in the interchange.
Currently, a particularly challenging spot for drivers travelling west toward Chubbuck from the Pocatello Creek onramp. “Drivers have just 2,400 feet to move from the right lane to the far left lane to exit to I-86. This results in difficult maneuvers,” said District Engineer Todd Hubbard.
To eliminate this problem the new design will allow through traffic travelling north toward Idaho Falls to remain in a left lane. Motorists entering the freeway northbound from Pocatello Creek can continue north to merge with northbound traffic or they can merge with westbound traffic passing under a bridge to head toward Chubbuck. “This also eliminates traffic merging from the left coming from Chubbuck. That’s important because drivers expect merging traffic to come from the right,” said Co-Project Manager, Zak Johnson.
Construction will also include a significant change for Chubbuck Road. Currently the road passes over I-15 and has limited accommodation for bicyclists and pedestrians traveling toward the Wellness Complex. The new design makes Chubbuck Road into an underpass with sidewalk and bicycle lanes.
Vehicles travelling northbound from Pocatello Creek Road will merge with I-86 traffic on a new ramp. Both lanes will then meet with I-15 northbound traffic near Chubbuck Road.
In addition, a north-south bicycle and pedestrian pathway is planned to help facilitate linking Pocatello Creek Road with the Portneuf Wellness Complex. This was designed in coordination with the Greenway Foundation. “Bicycle and pedestrian access to the Highland area was something the community saw as very important,” said Co-Project Manager, Greg Roberts.
The joint venture of Sundt Construction from Utah and Cannon Builders from Blackfoot is currently reviewing the project design and preparing a work schedule. Some equipment may be moved into position prior to the mid-July construction start date.
Motorists are encouraged to watch this I-86/I-15 Interchange overview video to understand how the new design will function. During construction it is important that drivers follow signage, slow down, and exercise caution.
This project is partially funded with Transportation Expansion and Congestion Mitigation (TECM) funds as part of Governor Little’s Leading Idaho initiative. The 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 new design changes Chubbuck Road into an underpass with additional space for pedestrians and bicycle lanes.
AMERICAN FALLS – The Idaho Transportation Department is beginning the summer work schedule with several projects in the I-86 corridor through Power County. These projects include repairing the Rockland Exit 36 bridge, repairing the Sunbeam and Seagull Bay bridges, and a pavement preservation project along I-86 through Power County.
The Rockland Interchange repair is scheduled to begin in June and will consist of surface repairs, girder repairs, and the installation of a new waterproof membrane for the deck. Motorists should expect some delays.
The Sunbeam and Seagull Bay bridge repairs are scheduled to begin in early August. Both will undergo surface repairs and new concrete overlays. During construction, traffic will be moved to one side of the interstate via crossovers and slowed through the construction area. Motorists should expect some detours during this project.
The pavement preservation project will consist of a micro-seal application which is intended to extend the lifespan of the pavement. ITD currently plans to perform this work after the bridge repair projects are completed. The micro-seal application is scheduled to be completed by the end of September. During work there will be lane closures and reduced speeds in work zones.
Drivers are encouraged to check 511.idaho.gov or the 511 app for the latest updates on construction and road conditions.
Widening of the highway is expected to begin next week at the intersection of State Highway 75 and Ohio Gulch Road north of Hailey. A contractor for the Idaho Transportation Department (ITD) will construct a right turn bay on SH-75 for northbound traffic turning onto Ohio Gulch Road.
In addition to the turn bay, crews will also construct a northbound acceleration lane for motorists merging onto SH-75 from Ohio Gulch Road.
“This work and the recent changes in the area are part of a larger project that will rehabilitate 5.7 miles of the roadway from McKercher Boulevard to East Fork Road next spring,” said ITD District Engineer Jesse Barrus.
While construction is underway, northbound traffic will be reduced to a single lane. Motorists are advised to slow down and watch for workers and heavy equipment along the highway.
“Weather permitting, work is expected to be complete prior to Thanksgiving,” stated Barrus. “We appreciate the patience of community members while we make these improvements.”
