Large concrete highway paving machines cannot be used economically on small sections of concrete highways or on bridge decks. For this reason these slabs are often hand finished using a soupy mix, which results in poor concrete surfaces, high maintenance costs, and disgruntled highway engineers. Now vibrating screeds are solving this problem. On floor jobs, too, the vibrating screed can do a faster and better fob than hand methods. Advantages are they encourage the use of low slump concrete, resulting in stronger slabs and better wearing surfaces; they reduce, and sometimes eliminate, the necessity of bull floating; they make it possible to shape the surface at the same time it is struck off; they increase the density of the concrete, resulting in a superior wearing surface; and they make it possible to start troweling sooner, since the drier mixes set up more quickly.