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Our Team

At MGA Structural Engineers, our team brings together diverse backgrounds and decades of structural engineering expertise across a wide range of building sectors. This depth of experience allows us to consistently deliver high-quality, client-focused services.

ENGINEERING:

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Jon Dietrich, P.E.

President & Managing Principal

BS Civil Engineering, Saint Martin’s University, WA 1992

​Licensed in Colorado and Washington

Jonathan Callahan, P.E.

Principal Engineer

BS Civil Engineering, University of Colorado, 2014

Licensed in Colorado

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Adam Balsiger, P.E.

Principal Engineer

​BS Civil Engineering, Colorado State University, 2015

Licensed in Colorado and Texas

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Anthony Barrett, PhD, P.E.

Principal Engineer

BS Civil Engineering, United States Air Force Academy, CO, 1996

MS Civil Engineering (Structures), University of Illinois, 2000

PhD Civil Engineering (Structures), Virginia Tech, 2006

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Alison McClure, E.I.

Design Engineer

BS Architectural Engineering, University of Wyoming, 2022

MS Architectural Engineering, University of Wyoming, 2023

ENGINEERING SUPPORT & BUILDING INFORMATION MODELING:

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Kevin Gregg

BIM Manager

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Brian Samberson

BIM Specialist

Matt Dietrich

BIM Specialist

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ADMINISTRATIVE SUPPORT & BUSINESS OPERATIONS:

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Christina Lowery

Office Manager

Kerri Pritchard

Administrative Assistant

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© 2026 by MGA Structural Engineers, Inc.

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