Ives Park, Calder Creek Emergency Storm Drain Repair

On April 25, 2025, a large sinkhole was found in an asphalt pathway that crosses Calder Creek in Ives Park. Upon examination, it was found that the structure of the base of the large 60"x 30' corrugated metal pipe (CMP) was compromised. This caused the fill and soil beneath the pipe to wash down the Creek and the fill above the pipe to slip into the void which resulted in unsupported asphalt in the pathway. The CMP that needs repair is directly in line with the flow of Caulder Creek. The sink hole was determined to be a risk for public safety and covered with large steel plates. Due to the urgency of the situation, a subcontractor was retained to perform a trenchless rehab of the CMP. The repair would consist of a cinderblock wall to keep the water held upstream with two 8" diversion pipes. Once the CMP is a dry environment, the repair to the floor of the CMP began. Shortly after, the work was stopped due to the concern of working with concrete in the waterway. As a result, Visqueen sheeting held with sandbags placed in the creek to keep the water from making contact with the cinderblock wall and cement. Water samples were taken upstream and below the diversion pipes to determine the levels of pH. Engineered plans and specs.