Buckley Park Critical Storm Sewer Repair
2026 Engineering Excellence Best of State
Entering Firm: Clark Dietz Inc.
Client: Village of Whitefish Bay
On a quiet morning in 2024, a massive sinkhole suddenly opened in Buckley Park, exposing the collapse of a 60-inch storm sewer pipe buried nearly 70 feet below ground. As the only outlet for stormwater draining 230 acres of Whitefish Bay, the failed pipe created an urgent threat. With rain approaching and the system completely blocked, the Village faced the possibility of severe flooding, sewer backups, and bluff erosion. Engineers needed to quickly evaluate the damage, manage the immediate drainage risk, and design solutions within a sensitive park setting and nearby residential area.
Rapid engineering response stabilized a storm sewer collapse and delivered a new, safer replacement.
Clark Dietz mobilized in hours. Within five days, the team designed and installed a temporary bypass system that conveyed stormwater to Lake Michigan. Using locally available materials and a custom routing strategy, the team assembled a creative system of piping, concrete barriers, structural supports, pumps, straps, and monitoring equipment. This emergency response protected the community while a permanent fix was developed.
Long-term repairs centered on a new 20-foot diameter work shaft to allow safe deep excavation. Hand tunneling reconnected the system, and the restored 60-inch outfall was lined, cleaned, and integrated with a custom drop structure.
“This project demonstrates an effective emergency response under extremely challenging circumstances. It highlights engineering at its best, restoring critical infrastructure while building public trust. The Clark Dietz team should be recognized for their success.”
- Awards Judge Rachel Feil
The project stabilized the bluff, preserved parkland, and maintained service throughout construction. It shows how resourceful engineering can solve complex problems under pressure while supporting community safety, sustainability, and infrastructure reliability.