Who We Are

McDonough-Whitlow, P.C. is a multi-discipline consulting engineering and land surveying firm located in south-central Illinois. We are a Women Owned and Disadvantaged Business Enterprise specializing in Civil, Structural, Mechanical, Electrical, and Plumbing Engineering, as well as Route and Land Surveying.


By the Numbers


Year Founded


# of engineers, technicians, and administrative staff


IDOT Pre-qualifications


CDB Pre-qualifications

About Us

McDonough-Whitlow, P.C. originated as McDonough Engineering (est. 1992) and has achieved recognition throughout the Central Illinois region for a multitude of services rendered to State, County, and Municipal Agencies. Our specialty services in Structural, Civil, Mechanical, Electrical, Plumbing, and Transportation Engineering and Land Surveying have augmented the design teams of Architects and other Engineering Professionals. Area industries, schools, contractors, and developers have also relied on our engineering and surveying expertise. Since the merger with Hard Surveying in 2001, McDonough-Whitlow, P.C. offers our clients a wide range of services.

We currently employ 15 engineers, technicians, and administrative staff.

Our company is  certified, pre-qualified, registered, and licensed with federal and state agencies.  For a complete list of our capabilities and certifications, click here.

Formal Quality Assurance/Quality Control (QA/QC) policies ensure a high level of accuracy and uniformity in all our work. Technological advances are incorporated by frequent equipment and software upgrades. Our team of professionals, licensed in Illinois, Wisconsin, Missouri, and Utah, render a wide variety of engineering and surveying services. We are devoted to providing high quality work with timely and personal service. Our growth and success are a direct result of our dedication to maintaining satisfied, return clients.

Regardless of the size or scope of the project, our goal is to achieve total quality in our services, commitment to our clients, and satisfaction from our clients. This dedication to quality service is shared by all of our employees. We combine this attitude and our experience, resulting in a spirit of close cooperation with our customers and a resolve to achieve the finest in creative design, quality workmanship, and functional excellence in every assignment.  It’s who we are.