UTrAp is a software package developed for pour sequence analysis of curved, trapezoidal steel box girders. Single and dual girder systems with a constant radius of curvature can be analyzed with this program. The software consists of a Graphical User Interface (GUI) and an analysis module. The analysis module relies on the finite element method to compute the response of a three-dimensional bridge structure. Input data is supplied to the program through use of a GUI. The program can handle multiple analysis cases and has graphics capability to visualize the output.