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MacArthur Associated Consultants

In 1976, the late Robert J. (Bob) MacArthur, PE, founded MacArthur Associated Consultants, LLC (MAC). The firm, located in Oklahoma City, OK began with a focus on military and aviation projects. Bob’s service in both the United States Air Force and Oklahoma Air National Guard contributed to his dedication to the pursuit of excellence, and his dedication to the principles of trust, integrity and unparalleled customer service.

Over the years, MAC has grown to be a full-service civil engineering and surveying firm, led by over 40 professionals. MacArthur’s Corporate Headquarters is located in Edmond, Oklahoma and MAC’s Bridge Division is located in Norman, Oklahoma. Inspired by MacArthur’s original vision, the MAC team approaches each and every project with a vision of engineering a tradition of excellence.
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We diligently serve our clients while endeavoring to positively shape our community's future... Read more


Engineering A Tradition of Excellence... Read more


Impacting Tomorrow By Being Extraordinary Today... Read more

Additional Culture Details

Our desire to impact tomorrow by being extraordinary today extends beyond our ability to design exceptional infrastructure to include our opportunity to support our neighbors. MAC gives back to our community through investing time and funds to deserving charities and non-profit organizations that keep Oklahoma thriving... Read more


Motivation drives us to overcome challenges, find innovative solutions and consistently strive for excellence. At MAC, we firmly believe that motivation is the key ingredient that fuels success, especially in an industry that demands meticulous planning, problem-solving, and the ability to tackle ever-evolving requirements

Recent Awards

Company Snapshots

Strategic Planning Meeting
Hoop Dreams
OKC Memorial Marathon
Greenway Trail Ribbon Cutting