Splitting a roadway

When you split a roadway, you can keep the original roadway ID for one of the two new roadways, or you can assign new IDs to both new roadways and expire the original roadway record.

When you split a roadway, all roadway data before the location of the split, measured from the start of the roadway, will be attached to the first of the two new roadways. The location of the split becomes the start of the second new roadway, with everything beyond that point attached to this second roadway at a position measured from the new start.

If the location of the split is between the start and end of a range, the range is divided between the two new roadways in the manner appropriate for the type of record it represents. For example, the diagram below represents a roadway, Highway 50, with a sign 3 miles from the start, another sign 16 miles from the start, and a Speed Limit attribute starting at 3 miles and ending at 16 miles. Highway 50 is split into two new roadways, 50a and 50b, at a location 8 miles from the start.

This diagram shows the two new roadways and their attached data after the split. Because the position of the first sign is before the location of the split, the sign is now attached to 50a, still 3 miles from the start. The second sign, which was 16 miles form the start of the original roadway, is now 8 miles from the start of 50b. Because the location of the split fell within the range covered by the Speed Limit attribute, each new roadway has a copy of the attribute, with the measurements adjusted to reflect the change in roadway structure: 3 miles to 8 miles on 50a, and 0 miles to 8 miles on 50b.

  1. Select Asset Management > Assets > Roadway.
  2. On the Roadway tab, under Configuration, click Split Roadway Tool.
  3. Specify this information:
    Split Roadway
    Specify the ID of the roadway being split.
    At
    Specify the point, measured from the start of the roadway, at which the roadway is to be split.
    Roadway Part 1
    Specify an asset ID for the first of the two new roadways.
    Roadway Part 2
    Specify an ID for the second new roadway.
    Maintain Roadway History
    Select if you want to maintain the records of the history of the roadway structure. Three records get added to the RWTOOLHIST (RoadwayToolHistory) table: one for the original roadway, and one for each of the two new roadways resulting from the split. Each record includes the starting and ending measurements of the roadway, the date the original roadway was split, and a description of the change. You can then view a history of each roadway and the affected roadway data in the Roadway InfoViewer.
  4. Click Finish.