The bridge is oriented on a user-defined coordinate system of X and Y axes. The longitudinal and transverse lines are set up in equation form and intersected by computing the solutions of simultaneous equations. The data given in the output at the intersection points of the longitudinal and transverse lines are computed using the basic concepts of analytical geometry. The bridge may be located in one, two, or three combinationns of horizontal curves and tangents. The survey line cannot be a spiral for the purpose of computing stations.
Vertical alignment is limited to two vertical curves with corresponding tangents.
The maximum number of longitudinal lines is thirty, and the maximum number of T-lines is twenty per span with no limitation on the number of spans. Single user or Network versions are available.