Below are some of Gainey’s feature Projects:

Sanitary & Stormwater

I-10 Frontage

After receiving the go ahead for this huge 12'x12' Pump Station, Gainey's knew we would have to manufacture a massive super-flat casting table to handle the 12" thick walls and 55,000 lbs of loading we would be bearing down with.  The new table allowed for the extremely tight tolerances required by this 33' tall precast pump station! 

Windsor Place UniStorm Treatment Structure

Before this 10' diameter Stormwater Treatment Structure could be shipped to Windsor Place, Gainey's put it to the test, by dry-fitting all the corresponding pieces - just like we do ALL of our UniStorms!

Industrial Structures

Water & Wastewater Treatment

Butte Larose 90,000 GPD Sewer Treatment Plant

In August, Gainey's just completed installation of this 90,000 GPD Sewer Treatment Plant for the Butte Larose Rest Area.  With this unique application, Gainey's worked with Meyers Engineering to not only address the rest stop's high concentration loading but also their need to accommodate seasonal flow.  This plant can be operated at 11 different treatment capacities due to the carefully-planned out piping and valve layout!

Country Lakes 70,000 GPD Sewer Treatment Plant

Country Lakes was the first plant Gainey's manufactured and installed to meet the new LUS specifications for sound attenuation (must be quieter than 50 dB) and ease of maintenance.  This custom wrap-around sewer treatment plant was also extremely efficient - reducing air and energy requirements by 25% due to the shortened aeration, RAS and WAS return lines.

Oak Grove

The Oak Grove project under Southern Lifestyle Development

Custom Structures


Updating a 50-year old tank containment system, while maintaining the system itself is a tall order. Creating and installing the new retaining wall was just one integral part of the project, and Gainey's performed. The entire project was completed 5-days ahead of schedule despite extreme weather, and other complications.

Breasting Dolphin

The Mississippi River Port Breasting Dolphins was the project that kept Gainey’s on its toes! From casting in 8’2” steel plates with Nelson studs welded in a specific pattern, to flush-cast pipes, this project required great attention to detail. With frequently changing details, it also required updates to both designs and fabrication methods throughout the project. Never a company to shrink from a challenge, Gainey’s completed the project accurately and on time. The final touch on this project was receiving a 2016 NPCA CUP Award in the Underground Category.

Arbor Walk 200,000 Gallon Holding System

Talk about CUSTOM!  Every facet of this job was custom designed from the 12' tall precast panels to the 3 types of stainless steel mechanical connections to the 20 sealant trials for the joint design!  All of this came together to provide 200,000 gallons of holding capacity for Arbor Walk Subdivision's sewer treatment plant that was installed in only 1 week!

Chemical Plant Secondary Containment Slab

Gainey’s worked together with B&H Distributors to design a precast secondary containment railway slab for a chemical plant in south Louisiana. These structures are to be used during the loading of caustic soda onto railway cars at their facility in St. Gabriel, Louisiana.  Gainey’s has successfully produced and delivered two of the six containment slabs needed. These precast slabs weigh nearly 125,000 pounds and measure in at 45 feet long, 10 feet wide, and 2 feet tall!  We are currently manufacturing the third and fourth slabs to be delivered in late September.

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