Abstract: A manhole cover system for a roadway includes a rotationally fixed outer support securable to an interior of a roadway opening, and an inner sleeve positioned inside of the outer support. The outer support and the inner sleeve share a common central axis. A manhole cover is located at an upper vertical end of the inner sleeve, and a threaded arrangement including a support thread of the outer support is engaged with a complimentary sleeve thread of the inner sleeve, such that rotation of the inner sleeve about the central axis moves the inner sleeve and the manhole cover along the central axis.

Abstract: A grader for a roadway surface includes a material hopper having a hopper inlet, and a hopper outlet. The hopper outlet is configured to flow material from the hopper onto the roadway surface. A grader blade is located rearward of the hopper outlet relative to a travel direction of the grader along the roadway surface. The grader blade has a lowermost blade surface such that a blade height from the lowermost blade surface to the roadway surface is selectable changeable to provide a selected thickness and/or distribution of the material on the roadway surface.