$111.9 million Contract Awarded for Pocatello System Interchange

Overhead view of interchange — 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.

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.

Additional information will be posted as the project progress on the ITD I-86/I-15 System Interchange project page.

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.

Overhead view of new Chubbuck Road underpass — The new design changes Chubbuck Road into an underpass with additional space for pedestrians and bicycle lanes.

ITD Preparing Projects on I-86 Through Power County

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.

Westbound ramp closure tomorrow at the Salt Lake Interchange

Image of traffic pattern change at Salt Lake Interchange

The westbound off-ramp at Exit 1 on Interstate 86 at the Salt Lake Interchange is expected to be closed tomorrow (Dec. 3) from 8 a.m. to 5:30 p.m.

Motorists heading west from Pocatello to Salt Lake will need to take Exit 216 at the Declo Interchange and re-enter I-84 toward Salt Lake. Eastbound traffic will not be affected by this closure.

Click here to see an image of the traffic pattern.

“This is follow-up work in connection to the closure that occurred late last month. It will be a short duration closure that will allow us to smooth the asphalt on the off-ramp,” Project Manager Travis Hitchcock said. “The asphalt work and additional signage installation are the remaining items left for this project.”

Drivers are urged to pay close attention to signage and message boards that will direct them through the area.

Wadsworth Brothers Construction of Draper, Utah, is the primary contractor on this project that involves replacement of an aging interchange with a new structure that will better serve motorists in the region.

Westbound ramp closure to begin tomorrow at the Salt Lake Interchange

The westbound off-ramp at Exit 1 on Interstate 86 at the Salt Lake Interchange is expected to be closed from 8 a.m. to 5:30 p.m. tomorrow and Friday (Nov. 19-20).

Motorists heading west from Pocatello to Salt Lake will need to take Exit 216 at the Declo Interchange and re-enter I-84 toward Salt Lake. Eastbound traffic will not be affected by this closure.

Click here to see an image of the traffic pattern.

“Work on the off-ramp must be done during the day when temperatures are high enough to properly seal the asphalt,” Project Manager Kenny Lively said. “This is one of the final steps needed for us to complete the project this winter.”

Drivers are urged to pay close attention to signage and message boards that will direct them through the area.

New traffic pattern in place next week at Salt Lake Interchange project

Image of construction on the Salt Lake Interchange project

As early as Thursday (Oct. 15), traffic will shift on Interstate 84/86 at the Salt Lake Interchange project. Motorists traveling toward Pocatello from Burley on I-84 will be detoured toward Salt Lake. They will take Exit 228 at Yale Road and then enter I-84 westbound and continue on to I-86 toward Pocatello.

“This detour will allow us to complete demolition of the aged eastbound bridge structure.” ITD Project Manager Travis Hitchcock said. “This will be the final demolition phase for this project.”

In addition to the Yale Road detour, westbound traffic progressing from I-86 to I-84 will now continue through the work zone in their designated lane of travel.

“These are new traffic patterns which replace others previously in place throughout this project,” stated Hitchcock. “It’s important that drivers pay close attention to signage and message boards that will be in place to safely direct them through the area.”

Traffic will remain reduced to a single lane in each direction. Drivers should continue to anticipate reduced speeds through the work zone and watch for crews and heavy equipment.

Wadsworth Brothers Construction, of Draper, Utah is the prime contractor on this project.

Substantial headway made on Salt Lake Interchange project east of Burley

Underway since May 2018, substantial progress has been made on the Interstate 84/86 Salt Lake City Interchange in Cassia County. With this project, the Idaho Transportation Department is replacing the old interchange with a new structure that will meet current standards and provide a better driving experience for motorists.

“This is a vital travel and commerce corridor for not only this area, but for the entire state,” said ITD Project Manager Travis Hitchcock. “Our goal is to construct an interchange that will serve motorists for many years to come.”

As work proceeds, drivers should anticipate a continuation of reduced speeds and changing traffic patterns through the work zone.

“There will be varying detours over the next several months as work on specific portions of the structure occurs,” stated ITD Project Inspector Jack Kelly. “It’s important that motorists not follow their GPS but instead pay close attention to signage which is in place to safely direct motorists through the area.”

Construction is scheduled to finish by late 2020.

Wadsworth Brothers Construction, of Draper, Utah is the prime contractor on this project.

New detour planned this week for Salt Lake Interchange project east of Burley

Beginning tomorrow night (Oct. 29) at 10 p.m., a new detour will be in place for motorists heading east on Interstate 84/86 from Burley toward Pocatello. During this time, crews will install new structures to hold overhead signage.

Weather permitting, this temporary traffic pattern is expected to last until 6 a.m. on Wednesday, October 30.

“Unlike previous detours that have been occurring in this area, this portion of construction requires that we direct motorists completely off of the interstate,” said ITD Project Manager Travis Hitchcock. “Directing traffic to Idaho Highway 77 and Idaho Highway 81 will allow for safe installation of the structures without traffic traveling underneath.”

This is part of the Salt Lake Interchange replacement project, underway since May of last year. Construction is scheduled to finish by late 2020.

Drivers should still anticipate reduced speeds through the work zone and pay close attention to signage in place to safely direct motorists through the area.

Wadsworth Brothers Construction, of Draper, Utah is the prime contractor on this project.

Overnight detour planned next week for I-84/86 Salt Lake Interchange project east of Burley

Traffic will be detoured overnight next week for motorists heading eastbound on Interstate 84 from Burley toward Pocatello as crews work to place girders on the newly constructed bridge.

This is part of the Salt Lake Interchange replacement project, underway since May of last year. Construction is scheduled to finish by late 2020.

This temporary traffic pattern is expected to be in effect between the hours of 9 p.m. and 5 a.m. during the nights girders are placed. Work is anticipated to be completed within a week.

“Detouring traffic around this portion of the work zone ensures the safety of motorists who would otherwise be traveling underneath the bridge,” said ITD Project Manager Travis Hitchcock. “Crews will be working to place the girders at night in order to reduce traffic impacts during peak traveling hours.”

Drivers should still anticipate reduced speeds through the work zone and pay close attention to signage which will be in place to safely direct motorists through the area.

Wadsworth Brothers Construction, of Draper, Utah is the prime contractor on this project.