Quality of construction for our clients.
Quality of life for our people.

We are a full-service Civil & Geotechnical Engineering and Materials Testing & Special Inspection firm serving all of Southern California.

For over 60 years, our Clients have relied on the team at Merrell Johnson through a wide range of projects and developments executed with the ease, efficiency and dependability that comes from partnering with some of the most knowledgeable and dedicated professionals in the industry.

Large enough to service any scale project but small enough that key personnel of the firm are always accessible and involved, we pride ourselves in being a mid-sized company that delivers excellent results without the excess cost or delays that can come with hiring larger firms. Our versatile staff of engineers, surveyors, technicians, inspectors, construction managers, project managers and support staff bring decades more hands-on experience, creating a well-rounded team of experts in their respective fields.

CIVIL & GEOTECHNICAL ENGINEERING
Hands-on, get-it-done civil and geotechnical engineering services with historic experience in Southern California.

MATERIALS TESTING & INSPECTION
Multi-accredited and fully certified, we provide quality construction materials testing and special inspections you can rely on.

CONSTRUCTION MANAGEMENT
With more than two decades of added value and expertise in the direction of large-scale, multi-million-dollar projects, we manage project teams of more than 250 individuals and contractors.

LAND SURVEYING
Equipped with state-of-the-art satellite and robotics surveying technology, we are ready to support your project from concept to completion.

CITY OF COVINA CALIFORNIA | Clients of Merrell Johnson Companies
CITY OF BIG BEAR LAKE CALIFORNIA | Clients of Merrell Johnson Companies
CITY OF ROSEMEAD CALIFORNIA | Clients of Merrell Johnson Companies
CITY OF VICTORVILLE CALIFORNIA | Clients of Merrell Johnson Companies
ARIZONA PIPELINE COMPANY
ABENGOA SOLAR | Clients of Merrell Johnson Companies
SOUTHERN CALIFORNIA LOGISTICS AIRPORT | Clients of Merrell Johnson Companies
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VICTOR VALLEY COMMUNITY COLLEGE | Clients of Merrell Johnson Companies
CITY OF MONROVIA CALIFORNIA | Clients of Merrell Johnson Companies
CITY OF ONTARIO CALIFORNIA | Clients of Merrell Johnson Companies
CITY OF CHINO HILLS CALIFORNIA

What our clients are saying:

“Merrell Johnson is a one-stop-shop for me. They provide all the essential services that I need for a construction project, soils, survey, civil, and testing, all in one local company.”

“Having Merrell Johnson on our projects gives us peace of mind knowing our standards are being met by the contractors. It has always been a pleasure working with everyone at Merrell Johnson.”

“Even when I am not in a contract with them, Merrell Johnson is a company that I will contact when I need expert advice in their respective fields.”

“I have had many good experiences working with Merrell Johnson over the past 20 years. The testing lab and its team are very good at what they do.”

“Merrell Johnson has been a great company to work with throughout the years. When we see their name on a set of plans, we know what to expect and that's typically a solid design and package.”

“Merrell Johnson brings vast knowledge in multiple fields. They provide numerous employees who have different skillsets that offer a well-rounded approach to projects.”

Let’s get started.