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The vision of this project is to build an interstate bypass to the south and west of the Boise metro area and to allow truck and through traffic an alternate route through the region, thereby reducing congestion on interstate 84.


Basic Information:
Project Priority HIGH
Project Length Approx. 16 Miles
Project Area:
Entire Length of ID-16 and the corridor South of ID-44 to I-84 Near McDermott Rd
Est. Cost TBD
Status Study phase
Complete Initial Study 2009
Estimated Project Completion 2015

Roadgeek Vision for this project:
Spectracity Priority HIGH
Spectracity Recommended Completion 2009


State Highway 16 (Emmett Highway) is the main route from Gem County to the Treasure Valley. The Emmett Highway corridor has been included in the “Connecting Idaho Program” which had included a new highway connecting to US 95 at the north end of Indian Valley and a connection to a possible southern extension to the South Valley Corridor along Kuna-Mora Rd. The corridor has high regional significance as a major commercial corridor for the greater Boise area, and an important link in statewide transportation.


The corridor will follow McDermott Rd from I-84 north to US 20/26 then northward to connect with the current SH-16 alignment at State St (SH-44). From there the highway will follow its current alignment northward to the top of Freezout Hill in Gem County. Interchanges will potentially be built at I-84, Ustick Rd, US 20/26 Chinden Blvd, SH-44 State St, Beacon Light Rd, Chapparral Rd, with others possible as well.


This roadway should be constructed as a limited access freeway. I propose that freeway interchanges be limited along the routing to allow maximum traffic flow. Interchanges should be spaced no closer that 1 Mile apart and spacing should be more than 2 Miles whereever possible. Exit locations could be located at Interstate 84, Ustick Rd, Chinden Blvd, State St/SH-44 (construct with Two Southbound exiting lanes), Beacon Light Rd, Deep Canyon, Northbound at Firebird/Southbound at Chaparral and Jack Ass Gulch Road.

The freeway should be constructed with one-way continuous frontage roads on either side whereever possible and whereever possible all entrances and exits should connect directly to the frontage roads and then Frontage roads will provide access to all other Roads. This type of freeway design is most common in Texas where it has been sucessfully been used for years, and provides flexible access to and from the freeway, while also providing excellent access for local traffic and to adjacent properties, not to mention the compact design.

Also whereever possible right-of-way planning should be done to reduce the impact to residential and commercial structures. and environmental impacts should be minimized or abated whithout causing ultimate harm to the outcome of the project.

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Updated 01/10/2007