Business Details
29 Years
experience
Civil Engineering & Design Services in the Gulf South
Founded in 1997 as a small civil engineering firm in Thibodaux, Louisiana, Duplantis Design Group has grown into a multi-disciplinary regional firm with over 160 employees and eight offices across the Gulf South. Our core values of Respect, Integrity, Client Satisfaction, and Excellence guide every project, ensuring we enhance the communities where we live, work, and play. Through strategic expansion, we now offer architecture, coastal engineering, landscape architecture, environmental consulting, surveying, transportation engineering, and program management. Our teams deep local expertise and partnerships with specialty firms enable us to deliver comprehensive solutions for complex projects. We prioritize strong communication, exceptional service, and innovative design to exceed client expectations.With decades of combined experience in coastal restoration, infrastructure development, and regulatory compliance, we serve public and private clients across diverse sectors. Our commitment to sustainable practices and community impact drives our approach to every project. From site investigation to construction administration, we provide end-to-end engineering and design services tailored to stakeholder needs. Our nationwide project experience demonstrates our ability to tackle large-scale challenges with precision and creativity. Duplantis Design Group remains dedicated to advancing infrastructure and environmental stewardship through technical excellence and collaborative partnerships.
Services
Civil Engineering
Coastal Restoration
Landscape Architecture
Environmental Consulting
Transportation Planning
Program Management
Surveying Services
Water Resources Engineering
Details
- Year established: 1997
Highlights and features
- We have over 25 years of experience in civil engineering and coastal restoration projects.
- Our team includes experts with decades of combined experience in Gulf Coast environmental challenges.
- We offer end-to-end services from concept design to construction administration.
- Our local expertise ensures compliance with regional regulatory requirements.
- We prioritize sustainable solutions that balance economic needs with environmental stewardship.
Services
Civil Engineering
Duplantis Design Group provides comprehensive civil engineering services for public and private sector projects. Our expertise includes site development, stormwater management, roadway design, and utility systems. With over 25 years of experience in Gulf Coast challenges, we deliver solutions that balance regulatory compliance with functional needs. Our team handles projects from initial planning to construction administration, ensuring quality and sustainability.
Coastal Engineering
Specializing in coastal restoration and flood risk reduction, Duplantis Design Group has designed over 4,000 acres of marsh creation projects. Our team combines local knowledge with technical expertise to protect Louisiana's coastline through sustainable solutions. Services include watershed management, stormwater systems, and construction administration for coastal infrastructure projects.
Landscape Architecture
Our landscape architecture division creates functional, sustainable spaces that reflect regional ecology and culture. We design parks, recreational facilities, and urban landscapes that enhance community value. Services include master planning, green infrastructure, and construction management for public and private developments across the Gulf South.
Environmental Consulting
Duplantis Design Group offers end-to-end environmental consulting services including permitting, impact assessments, and compliance monitoring. Our team navigates local, state, and federal regulations for coastal, industrial, and residential projects. We provide integrated solutions that balance environmental responsibility with economic development needs for public and private sector clients.
Program Management
We provide comprehensive program management services acting as owner representatives throughout project lifecycles. Our approach includes budgeting, scheduling, regulatory compliance, and team coordination. With expertise in funding advisory services, we help clients maximize infrastructure funding opportunities while ensuring timely and cost-effective project delivery.
Questions
What geographic areas does DDG serve?
DDG operates across the Gulf South with offices in Louisiana, Texas, Alabama, and Mississippi. We have completed projects nationwide but maintain deep expertise in Gulf Coast environmental and infrastructure challenges.
What industries does DDG specialize in?
We serve diverse sectors including coastal restoration, education, healthcare, industrial facilities, multi-use developments, and transportation infrastructure. Our core expertise lies in civil engineering, environmental consulting, and regulatory compliance for Gulf Coast projects.
How does DDG handle complex regulatory requirements?
Our environmental team has decades of experience navigating local, state, and federal permitting processes. We provide integrated regulatory compliance services, including impact assessments, permit applications, and monitoring programs tailored to Gulf Coast ecosystems.
What makes DDG different from other engineering firms?
Our combination of local expertise, multi-disciplinary services, and commitment to community impact sets us apart. We focus on sustainable solutions that address both technical challenges and long-term community benefits for every project.
Can DDG manage large-scale infrastructure projects?
Yes, our program management team provides comprehensive oversight for complex projects including budgeting, scheduling, regulatory compliance, and funding optimization. We serve as single-point contacts to streamline delivery for public and private sector clients.
