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About Us

Finding Inspiration in Every Turn

Our team is made up of experienced, dedicated professionals who bring diverse backgrounds and perspectives to every project. We believe that the strength of our work comes from the unique contributions of each team member, and we actively foster an environment that supports individual growth and development.

Our Story

Peak Consulting Group is committed to making a positive difference in our communities through infrastructure projects. We are a woman-owned firm providing federal, state, and local agencies with high-quality, superior strategic approaches to their transportation planning and National Environmental Policy Act (NEPA) processes. We consult on some of Colorado’s largest and most complex infrastructure projects, helping our clients deliver balanced highway, transit, and passenger rail solutions that keep our communities moving safely and sustainably.

Our founders formed Peak Consulting Group in 2017 after more than 20 years working for large engineering companies. We are based in Colorado and have extensive experience working on transportation projects throughout the western U.S. We are DBE, ESB, EBE, and SBE certified in Colorado, California, and Nevada.

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Mandy Whorton
Owner/Principal
Colleen
Colleen Roberts, AICP
Owner/Principal

Team Members

Chelsea smiling

Chelsea Adkisson, P.E.

Senior Project Manager

Spencer smiling for his photo

Spencer Tomlinson

Environmental Planner

Ashley smiling for a headshot

Ashley Bushey, ENV SP

Senior Project Manager

Matt's Headshot

Matt Kizlinski

Environmental Scientist

Josh posing for a photo

Josh Sidon, Ph.D.

Senior Project Manager

Lexi Stout's Headshot

Lexi Stout, ENV SP

Environmental Planner

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