The Idaho Transportation Department is continuing to invest in the Idaho 16 corridor to meet the long-term needs of the growing Treasure Valley.
Learn MoreThank you to all who participated in the October 2019 open house!
View the materials from the open house:
Regional growth: Rapid development in the western Treasure Valley is increasing travel demand on Idaho highways and surrounding regional roadways.
Regional mobility and circulation: Current north-south routes connecting I-84 and Idaho 44 (State St.) are not adequate to meet future demands.
Congestion on north-south arterials: The limited number of river crossings between Idaho 44 and I-84 increases congestion on the surrounding roadways.
The extension of Idaho 16 from I-84 to Idaho 44 will be a 7.49-mile limited-access expressway. Interchanges at Franklin Road, Ustick Road, U.S. 20/26 and Idaho 44 will provide motorists access to Idaho 16. A network of local roads will provide access to and from local neighborhoods and businesses.
Click here to view a map of the EIS preferred alternative
In 2011, ITD completed an environmental study to extend the corridor south to connect with I-84. The study resulted in an approved route for the highway extension.
Construction of the first two-mile segment was completed in 2014, which included a new bridge crossing the Boise River.
In 2017 and 2018, the Idaho Transportation Board and the Community Planning Association of Southwest Idaho both passed resolutions to continue work on the Idaho 16 corridor extension.
This allows ITD to:
- Refine the corridor’s design to better identify impacts to properties
- Update traffic projections through 2045
- Update right-of-way and construction cost estimates
- Refine elements of the 2011 environmental study
- Develop right-of-way plans
- Develop construction phasing plans
- Meet with individual property owners along the corridor
This work enables ITD to identify the funds needed to secure right-of-way and construct Idaho 16 from I-84 to U.S. 20/26, including the interchanges at Idaho 44 and U.S. 20/26, Ustick Road, and Franklin Road.