SRL for [finding]: State engineers have made a preliminary [finding] that it was failure of the concrete columns , wrenched and separated from the double - decker roadbed , that was responsible for the collapse .
ARG-0: State engineers | ARG-M-LVB: made | ARG-M-TMP: preliminary | ARG-1: that it was failure of the concrete columns , wrenched and separated from the double - decker roadbed , that was responsible for the collapse