# Bridge Options
The Bridge Options dialog box allows parameters that relate specifically to bridge analysis diagrams to be specified.
Open this dialog box from the Diagram Settings dialog box. It is only accessible when a relevant diagram data option is selected.
# Definition
Alignments
Specify the list of alignments that are to be included. This option is disabled when it is not relevant to the current diagram.
Paths
Specify the list of paths that are to be included.
Influence effect
Specify the Node Influence Effect or Beam Influence Effect that is to be considered. This option is disabled when it is not relevant to the current diagram.
Draw centre line
When checked the centre lines of paths are drawn.
Draw edges
When checked the edges of paths are drawn. This option is disabled when it is not relevant to the current diagram.
Label centre lines
When checked alignment and path centre lines are labelled.