The Bridge is an infrastructure built for acsess to pass the obtacles such as valley, river, sea, as well as crowded highway which needs flyover bridge. One of the main structure element in the bridge is girder. the cross-section’s shape of girder will affect structre strength. This research aims to find the best shape of girder’s cross-section that will be used for bridge. Three different sections were analyzed with span length of 40 m. moreover, one of three sections has modificated to provide variety. The result of analysis on loss of prestress, stress, and deflection occurred indicates that the type 1 is the most effective shape of PCI Girder.