Case Study: Pennsylvania Culvert Stabilization and Void Fill

Problem

A concrete culvert in Pennsylvania had a significant void beneath it, posing structural risk and preventing necessary resurfacing work. The void was exacerbated by water infiltration that was continually eroding away the support soil. The municipality needed a reliable and fast solution to stabilize the culvert before proceeding with resurfacing.

Solution

Utility Services Group was contracted to address the issue. They opted for an injection technique which involves injecting polyurethane at multiple shallow depths to target and fill the void comprehensively. NCFI’s TerraThane 24-003 polyurethane formula was selected for its hydrophobic properties, making it ideal for conditions where water was present in the soil and the void. The specialized formula ensured that the injection would displace water and bond effectively with the surrounding soil and culvert base.

Results

The injection process successfully filled the void beneath the culvert, stabilizing it and making the area ready for resurfacing. Utility Services Group’s precise application and use of hydrophobic polyurethane allowed the municipality to proceed with the next phase of repairs without delay. The project provided a durable solution and prevented further deterioration of the culvert, ultimately reducing potential costs and infrastructure risks.