Engineering solutions
that build strong communities
Providing architecture, civil, geotechnical, and municipal engineering services across the region and throughout the state.
Experts in Engineering
We engineer the systems that keep communities moving forward. We plan, design, and inspect infrastructure that moves people, protects communities, and supports growth.
Services in Architecture
With architectural expertise, we provide the capability to manage various project stages, including assessing site conditions and initial CAD drawings, developing functional floor plans and elevations, enhancing walls, roofs, and windows for light and comfort, and incorporating energy-efficient materials and eco-friendly systems.
Precision in Surveying
Accurate surveying is the foundation of every successful project. We offer reliable land surveying services, from residential to commercial, that supports projects from planning through construction.
Experience Quality Engineering Services
RJA Engineering, headquartered in Madisonville, Kentucky, has been delivering trusted engineering solutions since 1970. As one of the longest-established design firms in Western Kentucky, we bring decades of experience across civil, mining, and safety engineering; environmental and government services; land surveying and development; project management; and construction inspection.
We take a client-focused approach to every project—assigning a dedicated project manager and building a tailored team to meet specific goals. Using advanced design and drafting technology, we deliver efficient, high-quality solutions that consistently meet today’s standards and our clients’ expectations.
Trusted Solutions
Meeting Expectations
Our Mission
We are committed to providing quality services and workmanship to our clients.
We do so by understanding our client’s needs, being competent and honest communicators, and delivering a finished project that is on time and within budget.
Why Choose Us?
Focus On Getting Our Jobs Done
RJA Engineering is part of a family of companies that includes Associated Engineers and Ronald Johnson & Associates, PSC., creating a collaborative, multidisciplinary platform that integrates engineering and architectural expertise. This relationship allows us to deliver fully coordinated design solutions that address structural, civil, geotechnical, surveys, and architectural considerations in a cohesive manner. For our clients, this translates into improved design integration, reduced coordination conflicts, and more efficient project delivery. By leveraging the collective technical expertise and design capabilities of these affiliated firms, we are able to approach projects holistically—balancing form, function, constructability, and long-term performance. This integrated approach enhances design quality, streamlines communication across disciplines, and ultimately results in more resilient, constructible, and cost-effective solutions tailored to the client’s goals.
Address:
2740 North Main Street
Madisonville, KY 42431
Email:
Click here
Open Hours:
Mon-Fri: 9am - 4pm
Address:
2740 North Main Street
Madisonville, KY 4243
Email:
Click here
Open Hours
Mon-Fri 9am – 4pm