We are one of the Gulf Coast’s premier
marine construction companies.

Marine Construction

Kostmayer has a full-service marine fabrication facility which enables us to prefabricate portions of our clients’ structures off-site reducing time the dock or facility is shut down.

Marine Construction

Kostmayer is known for marine facilities and infrastructure construction work – it is the backbone of what we do. We’ve built just about everything and anything marine related on and around the water ways of the Gulf Coast.


  • Cofferdams
  • Fender Systems
  • Guidewalls
  • Pile Driving
  • Mooring Dolphins
  • Dock Construction
  • Dock Demolition

When the unexpected happens, Kostmayer is ready to go in emergency situations and will get your site back up and running ASAP.

Industrial Piping Systems

Kostmayer Construction has performed extensive piping work in petro-chemical and industrial plants along the Gulf Coast, and has deep knowledge and expertise to get your project done correctly and efficiently. Kostmayer can perform whatever fabrication, installation and maintenance you need. We have successfully completed capital and maintenance projects that other construction companies prefer not to tackle.


  • Piping System Installation
  • Equipment Setting
  • Piping System Maintenance


Kostmayer is used to tight deadlines, so when your project needs to be ready after a planned shut down or following an emergency situation, count on us to get you back up and running.

Process Piping Process Piping

We’ve installed piping systems for petrochemical, refineries and chemical plants
during shutdowns and turnarounds.

We build material handling systems to create a seamless transition of materials from one location to the next.

Material Handling Material Handling

Material Handling Systems

Kostmayer can build your system from the ground up, maintain your current system, or perform emergency work when you’re shut down and the clock is ticking.


  • Conveyor Systems
  • Gantry Cranes
  • Maintenance

Our experience and specialized equipment provides you with one resource for both marine and on-land construction of these systems.

Heavy Civil Construction

Kostmayer regularly performs heavy civil construction work in Southeast Louisiana for both petrochemical plants and municipalities.


  • Cofferdams
  • Pile Driving
  • Concrete Foundations
  • Structural Steel Erection

Some of these projects include: cofferdams and structural steel erection for petrochemical plants, municipalities, and private companies.

Process Piping Process Piping

Our heavy civil construction teams have built pumping stations, fortified levees with revetment, and are capable and ready to work in emergency situations.

Maintenance Construction

Kostmayer understands the importance of having a safe work site for the facility, our crews, the environment, and the public.

Maintenance & Emergency Work

Kostmayer understands the importance of having a safe environment and efficiently working systems, both on land and in the water. We will work with your maintenance and facilities teams to identify structures that need immediate maintenance, and we’ll help you make plans for projects that can wait another day.

We’re your “go-to team” for emergency work on docks, piping systems, and materials handling systems. Our team regularly performs emergency construction up and down the Mississippi River, and along the waterways of the Gulf Coast.