Abstract: A screed bar support saddle is carried by vertically adjustable legs mounted on the ends of support arms swingable in a horizontal plane so as to vary the spacing between the legs, between the legs and the screed bar, and to adjustably position the legs relative to the screed bar. The adjustable positioning and spacing of the legs enables the screed bar support assembly to be placed to avoid interference with reinforcing steel or wire, pipes, and the like, and to accommodate concrete pouring upon corrugated surfaces having different spacing ofcorrugating grooves. The screed bar is held against torsional and pivotal motion within a support saddle and precisely adjusted in elevation by rotation of an adjustment tool formed on the end of a sight rod that is used with a transit, level, or the like, for precision elevation control.