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I-86, I-15 Wye OPass System Interchange


Idaho Transportation Department

Project Type:

Engineering & Design



About the Project

ITD Enhances Safety by Reducing Ramp Speed, Solving Geometric Challenges

Stanley Consultants provided a value planning study for Idaho Transporation Department (ITD) to support programming and pre-design activities for this system-to-system interchange project. During the study it became apparent that the overwhelming project driver was to enhance safety. The idea was proposed to reduce the directional ramp speed by 5 mph. This allowed for improvements to stay within the existing right of way, allowed new alignment to match existing curve geometrics and simplified phased construction. ITD was able to save $20- to $25 million from an otherwise $81 million project by reducing the ramp speed.

By The Numbers

  • 20

    Million Dollars Saved

  • 81

    Million Dollars in Construction and Right-of-Way


Engineering & Design

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At Stanley Consultants, we understand that planning and consulting include every aspect of engineering. We use the best tools available to create designs and master plans built for longevity, resiliency, and sustainability.

Environmental & Regulatory

At Stanley Consultants, our talented team of scientists and engineers is focused on helping clients adapt to evolving regulations and finding solutions to protect the changing environment.

Project Management

At Stanley Consultants, we offer a broad range of professional expertise in construction management and constructability reviews to meet project objectives and deliver results.

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