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Extend a route

Available with Location Referencing license.

Extending a route involves adding length to the beginning or end of the route. As with other route editing activities, centerlines provide the location and geometry to extend a route. The centerline features used to extend routes can be existing features in the centerline feature class, be digitized into the centerline feature class (using aerial photography, satellite imagery, or other basemaps for guidance), be copied and pasted from other feature classes, or be imported from CAD files or other ArcGIS-supported data sources. In addition to extending the route, the Extend Route tool can update the calibration points.

Note:
  • The measures on the route are recalibrated downstream from the extended section of the route.
  • For an Engineering Stationing network, if the From Measure or To Measure values of the extended section of the route result in an equation point, a new route is created for the extended section.
    Variations in extending a route
    Variations in extending a route are shown.
    As shown in the examples above, in the first case, the route has measures that go from 0 feet to 10 feet. The geometrical length of the centerline used for extension is 10 feet. When you extend the route from the beginning, the measures for the extended section start at 0 feet and end at 10 feet. As you recalibrate the measures downstream, the original part of the route gets recalibrated and the extended route now has measures that go from 0 feet to 20 feet.

    In the second case for an Engineering Stationing network, the route has measures that go from 0 feet to 10 feet. The geometrical length of the centerline used for extension is 10 feet. When you extend the route from the end, the user selects the measures for the extended section to start at 5 feet and end at 15 feet. Therefore, the measures result in an equation point where the centerline and the original route meet. At this equation point, the back station is 10 feet and the ahead station is 5 feet. In that case, a new route is created for the extended section that has measures that go from 5 feet to 15 feet, and the original route stays intact.

  • For an Engineering Stationing network, extending routes is only allowed at the beginning of the first route in the series or from the end of the last route in the series.
  1. Add the centerline and network feature classes to a map.

    You can open a map in which the centerline and network feature classes are already present.

    Note:

    The Pipeline Referencing information model expects only one centerline at any given location. Make sure the centerlines used for your edit are not overlapping with other centerlines in your LRS.

  2. Zoom in to the location where you want to extend the route.

    Note:

    The centerline feature for extending the route must exist in the centerline feature class prior to extending the route.

  3. Click the Choose Centerlines button Choose Centerline on the Location Referencing tab and click an existing centerline on the map at the location of the extension.

    You can use multiple centerlines to extend a route.

    The selected centerlines are highlighted in blue, and the arrow shows the direction of digitization.

    Note:
    • The direction of digitization determines the direction of calibration, increasing in the direction of digitization.
    • You can keep the centerlines chosen after extending the route. This is useful if you are extending a route in the Engineering Stationing network and want to extend another one for the continuous network using the same centerlines or vice versa. For more information about keeping centerlines chosen, see Set Location Referencing options.
  4. Click the Extend button Extend on the Location Referencing tab.

    The Extend Route pane appears.

    Extend Route pane
  5. Choose the Network in which the route extension will take place.
    Note:

    Feature services published with linear referencing and branch version management will appear in the Network drop-down list. For more information, see Share as web layers with linear referencing and version management.

  6. Click the Choose route from map button Choose route from map to choose a route to extend.
  7. Click the Effective Date drop-down arrow to choose a date for the extension.
    • Alternatively, type the date in the Effective Date text box.
    • Double-clicking the empty Effective Date text box populates today's date.
  8. The From Measure value is automatically populated in the Extended Section.
    • If the route is being extended at the end, the suggested From Measure value is the same as the To Measure value of the original route.
    • If the route is being extended from the beginning, the suggested From Measure value is 0.
    • Alternatively, you can type a From Measure value.
    • If you do not know the start measure, allow Pipeline Referencing to suggest it. Click the Recalculate From Measure button Recalculate From Measure to do so. This value is calculated as the difference between the To Measure value and the geometric length of the centerline.
  9. Note:

    For the line network, the measures can be entered as station values in 00+00.00 or 00+00.000 format.

  10. The To Measure value is automatically populated in the Extended Section.
    • If the route is being extended at the end, the suggested To Measure value is the suggested From Measure value plus the geometric length of the centerline.
    • If the route is being extended from the beginning, the suggested To Measure value is the suggested From Measure value plus the geometric length of the centerline.
    • Alternatively, you can type a To Measure value of your choice.
    • If you do not know the end measure, allow Pipeline Referencing to suggest it. Click the Recalculate To Measure button Recalculate To Measure to do so. This value is calculated as the sum of the From Measure value and the geometric length of the centerline.
  11. Click Run.

    The route is extended. The original route is retired with its To Date populated with the Effective Date. A newly extended route is created with its From Date as the Effective Date, and the To Date set to <NULL>.

    Note:

    If a message appears that is related to acquiring locks, the need to reconcile, or not being able to acquire locks, conflict prevention is enabled. For more information, see Conflict prevention.