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ITD Projects South-Central Idaho I-84 Cotterell Rest Area

I-84 Cotterell Rest Area

Project Facts

Key Number: 9627
Project Number: IM-84-3(89)229

The Idaho Transportation Department is rebuilding the Cotterell Rest Area to better serve the growing number of travelers using Interstate 84. Improvements include replacing restroom facilities and meeting American with Disabilities Act (ADA) compliance. Rest areas and the Port of Entry are now closed and construction is underway. The Port of Entry will be open for use by mid-August and the rest areas are expected to be complete by November of 2013.

Project Backgound

The Cotterell Rest Area is located adjacent to I-84 at milepost 228. I-84 is the primary route for interstate traffic from Salt Lake City, Utah and points further east to much of Southern Idaho and the greater northwestern United States. Since the construction of the Cotterell Rest Area in 1986, substantial changes have been instituted to the design standards, rest area guidelines, and government regulations that render the facilities obsolete.

The rest area has heavy usage during peak travel periods and facilitates large truck traffic with shared access to the Port of Entry. The I-84 corridor currently has Average Daily Traffic (ADT) count of 6,600 and the traffic is expected to double by 2065.

ITD is currently in the process of studying the existing facility, structural elements, public health and safety needs, and the design standards for future use. The Port of Entry will remain intact and will not be affected by the reconstruction.

Project Description

The Cotterell Rest Area improvements will be designed to accommodate growth over the next 25 years. This reconstruction project seeks to address the most critical maintenance, safety, and public regulation needs as can be accomplished without right-of-way acquisition and within the available funding.

At the current funding level, the following improvements are scheduled:

  • Water system improvements which may consist of a decommission water well, new well, structure, pumps, pressure tanks, controls, and distribution system;
  • Wastewater system improvements which may consist of lagoon upgrades, new septic tanks, pumps, piping, and controls;
  • Site improvements to replace sidewalks and pedestrian ramps (ADA compliance), and illumination upgrades;
  • Demolish existing rest area buildings and construct new buildings;
  • Redesign the pavement markings for existing parking lot; and
  • Reconstruct the on/off ramps serving the rest area and Port of Entry.


ITD is contracting with a consultant engineering firm to complete design work of the project.


  Project Manager – Steve Tonks

  District 4 Public Information – Nathan Jerke

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.

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: 6/25/2013 10:51:09 AM

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Idaho Transportation Department
3311 W. State Street P.O. Box 7129
Boise, ID 83707-1129
(208) 334-8000