A previously reported modified hypernetted-chain theory is applied to study the structure of liquid metal in the liquid domain well above and below the freezing point. The former liquid domain permits a structural investigation of the metal-nonmetal transition for the expanded liquid metals, whereas the latter liquid domain permits a microscopic understanding of the dynamics of supercooled simple liquids. It was found in this work that the hard-sphere bridge function proposed by Malijevsky and Labik [Mol. Phys. 60, 663 (1987)] is currently the most reliable and accurate means for studying the structure of liquid metals over a fairly wide range of densities.