Abstract: The present invention provides a sideframe for use in a traditional three piece railway freight car truck comprising a pair of laterally spaced sideframes supporting a bolster extending between the sideframes. Each sideframe comprises an elongated top compression member, two diagonal compression members extending generally downwardly at acute angles from near the ends of the top compression member, and a bottom member joining the other ends of the diagonal tension members. Two column members also extend vertically between the bottom member and the top compression member. Such column members are strengthened by two ribs that extend laterally across the structure of the column member between sidewalls of the column member.