skip to main content
Idaho Official Government Website Contact Us

Building Idaho’s Future Idaho 16 Extension

The Idaho Transportation Department continues to invest in the Idaho 16 corridor in Ada and Canyon counties.

Para solicitar más información sobre este proyecto en Español, por favor llame (208) 334-8152

Learn More

The highway

Idaho 16 will have two lanes in both directions with a center median barrier and 10-foot shoulders. Motorists will be able to get on or off Idaho 16 at I-84, Franklin Road, Ustick Road, U.S. 20/26 and Idaho 44.

A network of local roads will provide access to and from neighborhoods and businesses. Idaho 16 will cross over Cherry Lane and McMillan Road.

This project is part of Idaho Governor Brad Little’s “Building Idaho’s Future” transportation funding solution.

A phased approach

The corridor will be finished in multiple phases. This approach will provide local access and regional mobility sooner.

Phase 1 opened in 2014. It included building a bridge over the Boise River and constructing the highway between U.S. 20/26 and State Highway 44.

Phase 2 includes finishing the remaining five miles of the highway, building bridges over local roads, and laying the groundwork for interchanges, which will be constructed in a future phase. Construction of Phase 2 could begin as early as Spring 2022.

Community input

ITD worked side by side with other transportation agencies, the development community and the public for many years to develop the vision and design for Idaho 16. The process has included a series of community workshops and public meetings. Click here to visit the most recent online meeting.

To hear more about the history of this project, listen to the April 2021 episode of the Drive Idaho podcast.

2006-2011
ITD completed an Environmental Impact Statement for Idaho 16
2012-2014
ITD designed and built the first 2.5 miles from Idaho 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
Idaho Transportation Board gave ITD the green light to design the next phase of Idaho 16
2020-2022
ITD is completing final design of Phase 2 (between I-84 and U.S. 20/26)
Spring/Summer 2022
Construction of Phase 2 expected to begin
© Copyright 2021 Idaho Transportation Department Visit ITD Website

Default Project Comment Form
Maximum upload size: 8MB
Maximum upload size: 52.43MB

Signup Form