Creating a new network edge along a simple edge

This topic applies to ArcEditor and ArcInfo only.

Steps:

1. Add your network feature classes to ArcMap.
2. Click the Editor Toolbar button on the Standard toolbar.
3. Click the Editor menu on the Editor toolbar and click Start Editing.
4. Zoom to the area where you want to add the new feature.
5. In the Create Features window, click the type of edge feature you want to create, and click the Line construction tool.
6. Click Customize > Toolbars > Snapping.
7. Activate Edge Snapping and deactivate the other snapping options.
8. Move the pointer near the simple edge to which you want to snap this edge until the pointer snaps to it.
9. Click the map to create the new feature's vertices.
10. Double-click the last vertex to finish the feature.

    You have now created a new network edge. Since you snapped it to the edge of an existing edge, if there is an edge–edge connectivity rule between these edges, a new junction is created, which is the default junction type for that rule. If there is no edge–edge rule, then the new junction is the default network junction. If there is an edge–junction rule for the new edge with a default end junction type specified, this junction type will be added. If there is no edge–junction connectivity rule, an orphan junction is added. Because the edge that was snapped to is a simple edge, it is split into two new edge features. The value of the attributes in the new features is determined by their split policies.

11. Click the Edit tool on the Editor toolbar.
12. Click the simple edge to which you snapped your new edge.

    There are now two edges split at the new junction.

Tip:
• You can also snap a junction along a simple edge. Similar to snapping an edge, the junction is connected to the network. The simple edge is split into two new features.
• You can specify what type of junction is placed at the free end of new edges by creating an edge–junction rule. For more information on connectivity rules, see About geometric network connectivity rules.
• For more information on split policies and how they affect attribute values, see An overview of subtypes and attribute domains.