what we do

Roadway & Highway Design

Designing infrastructure to safely and efficiently move people and goods

Providing safe and efficient transportation infrastructure is more challenging today due to limited funding and increasingly complex regulatory processes. Parametrix works with clients to develop solutions that are cost effective and minimize disruption to users and the environment. We incorporate LID, green streets, and complete streets principles to create appealing, safe, and sustainable transportation right-of-ways.

Idaho 16, US 20/26 | Parametrix
Idaho 16, US 20/26 to Idaho 44 
Boise, Idaho
Client: ITD

This 2-mile extension is the first step in extending Idaho 16 south in the Treasure Valley. Ultimately, ITD will connect Idaho 16 to I-84 to accommodate development in western Ada County and eastern Canyon County. Parametrix led the project team to deliver this fast-tracked project. The project involves designing a new four-lane highway, bridges across the Boise River and Phyllis Canal, at grade signalized intersections at US 20/26 and SH 44, consolidating access, and adding 5 miles of new local roads.

Project of the Year, Idaho Business Review, 2016

Project of the Year Over $10M, ASCE Section 8, 2015

National Recognition Award, ACEC, 2015

Project of the Year, ASCE Southern Idaho Section, 2015

1st Place - Transportation, ACEC Idaho, 2015



  • I-84 Meridian Road Interchange | Parametrix

    I-84 Meridian Road Interchange

  • Cross-SKIA Connector | Parametrix

    Cross-SKIA Connector

  • Idaho 16, US 20/26 | Parametrix

    Idaho 16, US 20/26 to Idaho 44

  • I 5/116th St NE Interchange | Parametrix

    I-5/116th Street NE Interchange

  • Port Westward Roadway | Parametrix

    Port Westward Roadway Improvements

  • Shaw Road Extension | Parametrix

    Shaw Road Extension