By default, Autodesk Civil 3D joins all points with the same point code along a corridor baseline and displays them as feature lines. You can modify how points are connected when a point code is used multiple times at consecutive chainages.
Modify feature line connections by specifying which point codes are connected using branching options and the direction for branching, and whether extra point codes are to be connected.
If an assembly is applied at consecutive chainages with a varying number of point codes (of the same type), you can control both whether the feature lines are connected and how they are connected.
The following illustrations show different branching and point connection options and the resultant feature lines.
In all illustrations:
Inward branching and extra points (with the same point code) are not connected:
Inward branching and extra points (with the same point code) are connected:
Outward branching and extra points (with the same point code) are not connected:
Outward branching and extra points (of the same point type) are connected: