Idaho Transportation Department
About Us Travel Services DMV Public Involvement News and Information
ITD Home News and Info Contact Us

East Idaho Southeast Idaho South-Central Idaho Southwest Idaho North-Central North   North Idaho
  North-Central Idaho
  Southwest Idaho
  South-Central Idaho
  Southeast Idaho
  East Idaho

ProjectsIdaho Transportation BoardIdaho Transportation Investment ProgramMetropolitan Planning OrganizationsLocal Highway Technical Assistance CouncilNatl. Environmental Policy Act (NEPA)Drive Act Summary
ITD Projects GARVEE D3 I84_Orchard_to_Isaacs I-84, Gowen Road Interchange

I-84, Gowen Road Interchange

Construction Update

Construction on the Gowen Interchange began in early March. The contractor is working on drainage and new pavement on I-84. Traffic has been shifted slightly to give crews more room in the median area.

Current traffic impacts include:

  • Overnight lane restrictions will continue on I-84 for the next several weeks from 8 p.m. to 5 a.m. Monday through Friday, and until 7 a.m. on Saturday and Sunday.
  • Throughout construction, drivers can expect traffic shifts and shoulder restrictions on I-84 and Gowen Road.
  • The speed limit has been reduced to 55 mph on I-84 and 25 mph on Gowen Road.

Safety is our first priority at ITD. Always plan ahead, pay attention and know your route. To receive construction updates, email

Project Facts

Project Number: A009(822) & A013(812)
Key Number: 09822 & 13812
MP 55.12-57.35

ITD is replacing the Gowen Interchange and widening I-84 to three lanes in both directions between the Broadway and Gowen interchanges. The project will improve safety and traffic flow.

When complete, the interchange will include:

On Gowen Road (Idaho 21):

  • Two through lanes in both directions. All of the through lanes will be widened.
  • A new third lane on the eastbound side of Gowen Road to Federal Way.
  • Curb, gutter, sidewalks and bicycle lanes.
  • A new traffic signal at the end of the westbound off-ramp.

On the I-84 on-ramps:

  • Wider, longer on- and off-ramps.
  • Two dedicated left-turn lanes from Gowen Road to the westbound I-84 on-ramp.
  • Two dedicated right-turn lanes from Federal Way to the westbound I-84 on-ramp.
  • One dedicated left-turn lane from Gowen Road to the eastbound I-84 on-ramp.

On I-84:

  • Three lanes in both directions between Broadway and Gowen, instead of just two lanes.

For more information about the project click here for a project fact sheet.

In addition to the Gowen Road Interchange reconstruction, ITD will be replacing the Broadway Avenue Interchange in Boise and the Meridian Road Interchange in Meridian.


This project is a result of an Environmental Assessment and a planning study for I-84 from just west of the Orchard Interchange to the Isaacs Canyon Interchange (Eisenman Road). The interstate, built in the late 1960s, was not designed to handle the current traffic volumes. The study recommended improvements for this corridor, including replacing the existing pavement, adding lanes to the interstate, installation of soundwalls, and reconstructing the Orchard, Vista, Broadway, and Gowen interchanges to meet future traffic capacity requirements.

ITD received environmental approval for this project from the Federal Highway Administration in November 2007. For more information about the Environmental Assessment, click here.

Construction Schedule

Work will begin in Spring 2014 and end in late 2015. Knife River Corporation of Boise is the contractor.

  • Spring 2014: Construction begins on eastbound I-84 and Gowen Interchange.
  • Summer/Fall 2015: Construction begins on westbound I-84.
  • Summer 2015: New I-84 lanes open.
  • Late 2015: Gowen Interchange complete.


The Gowen Interchange construction will cost $27 million. Funding will come from two sources: the GARVEE Transportation Program and traditional federal transportation funds.

ITD saved $80 million during the GARVEE program due to efficient management and competitive construction bids. The savings will fund reconstruction of the Meridian, Broadway and Gowen interchanges. ITD has provided an additional $44 million for these projects from traditional federal transportation funds.

Learn more about the GARVEE Program.

Compliance with Title VI of the Civil Rights Act

The Idaho Transportation Department (ITD) is committed to compliance with Title VI of the Civil Rights Act of 1964 and all related regulations and directives. ITD assures that no person shall on the grounds of race, color, national origin, gender, age, or disability be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any ITD service, program, or activity. The department also assures that every effort will be made to prevent discrimination through the impacts of its programs, policies, and activities on minority and low-income populations. In addition, the department will take reasonable steps to provide meaningful access to services for persons with Limited English Proficiency.

Contact Us
P.O. Box 7129 • Boise, ID 83707-1129
Ph: (208) 334-8938 • Fax: (208) 334-8563
TDD: (208) 334-4458

ITD Public Involvement
P.O. Box 7129
Boise, ID 83707-1129
Phone: (208) 334-8119
Fax: (208) 334-8563
TTY/TDD Users: Dial 711 or
(800) 377-3529 to use Idaho Relay System

Page Last Modified: 11/10/2014 2:50:22 PM

About Us | Traveler Services | DMV | Projects | News And Info| Privacy & Security
Idaho Transportation Department
3311 W. State Street P.O. Box 7129
Boise, ID 83707-1129
(208) 334-8000