Manhole Cover Raising

The District's sewer system contains nearly 8,000 manhole covers. Every time a road in the District is re-surfaced, the manhole cover must be raised. The District employs two full-time manhole crews.

Raising manhole covers is difficult and physically demanding work. Covers must be raised correctly to keep the road surface smooth for traffic and avoid problems with snow plows.

Crews use an asphalt recycler to minimize waste, save money, and complete the job quickly.

After the recycled asphalt has been placed and compacted, the road surface is immediately ready for traffic.

A dump truck is shown on the street towing an asphalt recycler. A worker is shown operating a jack-hammer. Two workers are shown digging around a sewer manhole ring and lid. A sewer manhole is shown with a new grade ring and ready for installation of the ring and lid. A worker is shown checking the level of the sewer manhole ring and lid. Asphalt chunks are shown in the recycler's hopper. Workers are shown removing hot asphalt from the recycler with a shovel. Workers are shown placing recycled asphalt around the sewer manhole ring and lid. A compacter is shown on the newly placed recycled asphalt. A newly raised manhole ring and cover.