Failing culvert saved with trenchless point repairProblem / An Atlanta suburb was experiencing severe infiltration from a failing corrugated culvert, installed years before as a stream crossing. The exposed 8-inch culvert was used as a sewer line between two manholes and a retaining wall was built directly on top of it. Rusting over the years caused a couple dime-sized holes, allowing stream water to pour directly in. Traditional dig-and-replace methods required bypassing both the sewer and the stream to prevent sedimentation, in addition to demolishing and relocating the retaining wall. Contractor quotes were $90,000 and up, and would have required occupying adjacent
