City of Shawnee Uses Innovative Stormwater Repair Solution to Protect Local Homes

Posted on Tuesday, January 28th, 2025 by
In Stormwater, tagged in

Some of the corrugated metal pipes (CMP) near Johnson Dr. and Mauer Rd. were failing. The City of Shawnee, Kansas knew they needed to repair or replace the infrastructure there. They looked to Affinis to find a cost-effective solution.

Our stormwater team began the project by reviewing CCTV footage of the pipes along Johnson Dr. They used these videos to determine the condition and identify what could be replaced or repaired. In addition, our survey team went on-site to conduct a topographic survey of the area.

Initially, the plan was to either replace the pipes or perform a spot repair and line them with a cured-in-place pipe (CIPP) lining. During utility coordination, we discovered one of the larger pipes that had a large puncture in it was conflicting with a utility. Relocating this utility was going to be extremely difficult, so we worked with the City to use a different approach: fold-and form in place (FIPP) liners.

When making repairs with CIPP linings, a felt line is saturated with resin and then pulled through the pipe. Due to the large puncture in the pipe, there was a very high chance the liner could tear during the lining process. The FIPP liner is sturdier and less likely to tear. The City went with the FIPP liner as an innovative solution that allowed the utility to remain in place.

To install, the contractor’s team hammered the puncture into place. Then, they placed the liner. Not only was the FIPP a fit for the site, it offers increased durability and can be used in more applications than CIPP.

While the stormwater group was tackling the CMP repairs, our roadway team was designing improvements to the intersection at Johnson Dr. and Mauer Rd. Having both projects in-house allowed us to deliver the best solution for Shawnee and create a seamless experience.

Completed in 2024, these improvements protect local homes. Not only did the City of Shawnee reinvest in local infrastructure, they used an innovative pipelining technique, which can be implemented in future projects.

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