(Sinkhole Series: second post of four)
As some may recall, in August 2004, six homes were evacuated when a 40-foot deep sinkhole developed over the Romeo Arm Interceptor in the city of Sterling Heights, Michigan. The Detroit Water and Sewerage Department immediately assembled a team of staff members, contractors, and engineers to formulate an emergency plan to stabilize the area. As prime consultant, NTH Consultants led an effort to stabilize the area, ensure wastewater service was not interrupted and to permanently repair
the damaged interceptor.
Stabilize & Repair Interceptor Collapse
Following on-site evaluations, it was determined that the following procedures would be necessary to stabilize and repair the interceptor collapse:
Restoration of Alignment
Following the repair of the interceptor, the NTH team developed restoration plans for the entire alignment of the project. The restoration program included the following:
Efficiency & Speed
When the sinkhole was first encountered, the media estimated that repairs could take several years to complete. Working with several other contractors, often on a 24/7 schedule, the team made this new pipe operational within 204 days.