Browse the Top Engineering Companies Serving O'Fallon, MO

DOTec Engineering, established in 1991, provides comprehensive multi-disciplinary engineering services including civil, structural, and forensic engineering, construction management, and solar energy solutions. Our team delivers cost-efficient, code-compliant designs tailored to public and private sector needs. With nationwide expertise in permitting and rapid project execution, we prioritize innovation, safety, and client satisfaction.

Engineered Lifting Systems delivers comprehensive overhead crane and hoist solutions for industrial and commercial clients. Established in 2004, we provide equipment sales, repair services, and modernization projects backed by factory-trained technicians. Our offerings include parts supply, structural repairs, and automation upgrades, serving businesses nationwide from our St. Louis headquarters.

Heneghan & Associates PC provides civil engineering, surveying, and funding assistance services for water, wastewater, transportation, and land development projects. With 39 years of experience, we deliver cost-effective infrastructure solutions through collaborative design and alternative delivery methods. Our team serves municipalities, developers, and public agencies across Illinois and Missouri.

Frontenac Engineering Group provides civil engineering, structural engineering, and land surveying services to commercial, residential, and institutional clients across the United States. Founded in 1980, we combine decades of experience with cutting-edge technology to deliver cost-effective, timely solutions for new construction, renovations, and land development projects. Our team collaborates closely with stakeholders to ensure compliance with LEED standards, ADA requirements, and federal regulations.

Volz Incorporated specializes in land planning, civil engineering, and surveying services for residential, commercial, and government clients. Since 1969, we have delivered innovative solutions for zoning, site development, and infrastructure projects across the Greater St. Louis region. Our expertise ensures compliance, efficiency, and long-term value for every client engagement.

Gonzalez Companies is a civil engineering and construction management firm dedicated to sustainable infrastructure solutions. Established in 1999, we serve public and private clients across the Midwest with expertise in transportation, water systems, and environmental projects. Our collaborative approach ensures high-quality, cost-effective results tailored to each client's needs.

St Charles Engineering & Surveying provides professional land surveying and civil engineering services for residential, commercial, and municipal projects throughout Missouri and Illinois. Our team combines advanced technology with traditional expertise to deliver accurate boundary surveys, topographic mapping, and construction staking solutions. With decades of regional experience, we support developers, homeowners, and contractors in achieving successful land development outcomes.

Vestal Corporation is a leading engineering, architecture, and construction consulting firm specializing in Integrated Project Delivery services. We provide comprehensive solutions across diverse sectors including industrial, food and beverage, healthcare, and government projects. Our multidisciplinary team combines technical expertise with innovative technologies to deliver complex projects on time and on budget.

SMS Engineers specializes in civil engineering and land surveying services with over 125 years of expertise. We deliver comprehensive solutions for commercial, residential, and municipal projects. Our team combines traditional values with modern technology to ensure successful project outcomes.