Manitowoc Culvert Lining
- LocationManitowoc, Wisconsin
- TimelineDecember 2016
Michels Trenchless, Inc. installed 180 feet of a cured in place pipe liner into a 60-inch segmental reinforced concrete culvert to restore its hydraulic integrity and repair areas where concrete was spalling and reinforcing steel was exposed. The culvert lining system was comprised of six layers of felt which was impregnated with thermosetting resins at Michels' Wisconsin headquarters 75 miles away. An eight-person crew used pressurized air to invert and install the 26,000-pound liner and used steam to cure it.
Michels Trenchless culvert lining contractors coordinated the timing of the project with the governing body's schedule and when water levels would be low and the jobsite would be accessible. Due to the steep embankment separating the county highway from the culvert, it was determined that it would be best to stage the liner, air inverter and related equipment in a pasture next to the culvert rather than along the road's shoulders 25 feet above it.
The culvert lining was rehabilitated in 24 hours with minimal traffic disruption.