SupportLines
Supportlines are used to layout the spans of the bridge. See Substructure
for details on placing the piers and abutments in your bridge once the superstructure
has been placed.
Starting in version 25, even after the bridge deck, the girders and piers have been placed, it is possible to add intermediate support lines one at a time using either the Midpoint or Parallel placement options. The concrete beams are automatically added to the new span, and steel beams are extended over the span since they are typically continuous. This makes it easy to adjust the span layouts and beams easily. The bearings and piers will have to be added by the user manually.