We are Cothren, Graff, Smoak Engineering.
Our office has served the city of Shreveport, as well as many other communities in the tristate area for over 50 years. We strive to provide excellence in quality of work and in client experience. Over the years our projects have served individuals, municipalities, and businesses, through a wide range of services, in both structural and infrastructure arenas.

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We are ready for your project

Providing a broad scope of services for a variety of clients, CGS Engineering
has developed an extensive project portfolio.
Our experience and expertise allow us to tackle projects with confidence and deliver dependable results.


Our team can provide in-house inspection and monitoring of project progress for contract compliance. We have performed inspection and analysis on countless structures, including elevated water storage tanks and underground water and sewer pipes. Our field crew is also equipped to gather survey data for our project sites.


The CGS engineers are able to draw on years of experience to provide engineering and design services for construction projects, from the foundation to architectural concepts, as well as electrical systems. Our office has completed many redesign, rehabilitation, and modification projects on existing structures.


Serving municipalities and water districts throughout the state, our office has a long history designing water and sewer distribution and collection, treatment facilities, and system expansions. Likewise, we have provided design services for many street projects, for new construction in addition to rehabilitation and redesign of existing streets.


CGS Engineering’s scope of experience encompasses designing for both public and private use. This includes several public parks and recreation facilities, RV parks, earthwork and drainage, retaining walls, and dormitories. Our office also has long-standing experience providing engineering services to the regional airport, on rehabilitation and expansion projects.

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From streets to water systems, from large-scale buildings to special-use facilities, we will continue to uphold our history of quality service and excellence in design.

Dedicated to designing with integrity, providing quality service, and delivering solutions.

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