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State Highway 16 Extension

The Idaho Transportation Department is extending State Highway 16 through the central Treasure Valley.

Para solicitar más información sobre este proyecto en Español, por favor llame (208) 334-8008.

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The vision for State Highway 16

State Highway 16 currently runs from the northern limits of Meridian to the southern limits of Emmett. ITD will extend the highway south to I-84, providing a much-needed north-south route through the central Treasure Valley.

  • The highway will have two lanes in both directions with a central median barrier.
  • Motorists will be able to get on or off the new highway at I-84, Franklin Road, Ustick Road, U.S. 20/26 and SH-44.
  • A network of local roads will provide access to and from neighborhoods and businesses. The highway will cross over Cherry Lane and McMillan Road.

A phased approach

The Idaho Legislature has authorized funds to begin construction in Summer 2022. Initial construction will include:

  • Five miles of highway between U.S. 20/26 and I-84.
  • An initial interchange at SH-16/I-84.
  • Overpasses at Cherry Lane, McMillan Road and the railroad.
  • Stop-controlled intersections at Franklin Road and Ustick Road.
  • An updated layout for the current U.S. 20/26 intersection.

 

ITD is also completing the design of the future interchanges at Franklin Road, Ustick Road, U.S. 20/26 and State Highway 44. Additional funding will be needed to build these interchanges.

Community input

This project comes after years of planning and collaboration with community members, transportation agencies, the development community and the traveling public. ITD is committed to keeping the community informed.

2006-2011
ITD completed an Environmental Impact Statement for State Highway 16
2012-2014
ITD designed and built the first 2.5 miles from State Highway 44 to U.S. 20/26
2017-2019
ITD refined the design for the remaining 5 miles, updated the EIS and reduced the highway footprint
2020-2021
ITD completed final design of Phase 2 (between I-84 and U.S. 20/26)
2021
Leading Idaho Transportation Program funded Phase 2 construction
2021
ITD began design plans for Phase 3
Summer 2022
Construction of Phase 2 begins
2024
Phase 2 construction complete
2024
Phase 3 design complete
Frequently Asked Questions
ITD thanks everyone who participated in online meetings, Q&A sessions or pop-up meetings in 2021. Here are a few of the most frequent questions we received.
Construction
What is the timeline to build this project?
What is the timeline to build this project?

ITD is building this highway in multiple phases:

  • Construction of Phase 1 was completed in 2014 between U.S. 20/26 and SH-44.
  • Construction of Phase 2 is expected to begin in 2022 and be completed within 2-3 years. This phase will include the remaining 5 miles of roadway, bridges over Cherry Lane and McMillan Road, and at-grade intersections where future interchange ramps will be.
  • The “ultimate vision” will include interchanges with bridges over Franklin Road, Ustick Road, U.S. 20/26 and SH-44. ITD is beginning design of these interchanges. Once these interchanges are funded, ITD will begin construction as quickly as design plans are finished.
Construction
When and where will ITD begin construction?
When and where will ITD begin construction?

Construction of Phase 2 is funded and will begin in 2022. It is expected to take 2-3 years to complete. At this point, it is too early to know the location where ITD will begin construction. ITD is preparing construction plans and will work closely with the construction contractor(s) to complete the work as efficiently as possible.

General
What is the status of right-of-way purchases?
What is the status of right-of-way purchases?

ITD has been in conversation with property owners for many years. ITD continues to make significant progress on the acquisition of property needed for this project.

Bicycles and Pedestrians
How will ITD accommodate bicycles and pedestrians?
How will ITD accommodate bicycles and pedestrians?

Because Highway 16 will be a high speed, limited access highway, it is not a route for pedestrians and cyclists traveling north or south. However, there are existing north-south roads that parallel Highway 16 and will provide for bike and pedestrian travel.

The project will accommodate east-west travel by cyclists and pedestrians in several locations.

  • Franklin Road will include sidewalks and bicycle lanes within the project limits.
  • Ustick Road will include shared-use pathways on both sides of the road within the project limits.
  • S. 20/26 will include a shared-use pathway within the project limits.
  • The bridges going over McMillan Road, Ten Mile Creek, Five Mile Creek, Cherry Lane and the railroad tracks are long enough for bicycle/pedestrian pathways to be built by local jurisdictions in the future.
Noise
Will ITD build noise walls along Highway 16?
Will ITD build noise walls along Highway 16?

No. ITD completed a detailed noise evaluation in 2010 and updated the study in 2020. The noise evaluation concluded that noise walls did not meet federal or state policies to be built at project expense.

Other
When will Highway 16 be improved between SH-44 and Emmett?
When will Highway 16 be improved between SH-44 and Emmett?

ITD is planning to update the long-range plan for this section of Highway 16. The department is also working with local jurisdictions to mitigate the impact of new development along the corridor. This may include small changes to the roadway. Additionally, the cities of Star and Eagle are currently collecting proportionate share costs from new developments to help fund major improvements in the future.

Other
Will Highway 16 be like Eagle Road?
Will Highway 16 be like Eagle Road?

No. Highway 16 will be a limited-access expressway, unlike Eagle Road. Motorists will only be able to get on or off the new highway at I-84, Franklin, Ustick, 20/26 and SH-44. Driveways will not be permitted along the highway at any stage of this project.

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