---
description: >-
  This page provides documentation for how to update the CTN intersection points
  data to include changes that have occurred following street segment updates.
---

# 2. CTN Intersection Points Update

Once updates have been made to the CTN Street Segments, it is likely new intersections will have been added or existing intersection locations may have moved. The following documentation assumes you are working out of the project at the location below:

G:\ATD\ATD\_GIS\CTN\CTN\_StreetSegmentUpdates\StreetSegmentUpdate\_WorkingMap\StreetSegmentUpdate\_WorkingMap.aprx

1.  **Run tool to generate modified intersection points**

    *   Make sure the following layers are included in the map

        _CTN\_Intersections_ -> CTN Intersection layer from MAINT

        _ATD\_ADMIN.CTN_ -> CTN layer from MAINT (Subject to Change)
    *   Run _Intersection Point Updates_ tool located in the _IntersectionsUpdateTools.tbx_ toolbox (tool takes approximately 3 minutes to run)

        ![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2Fc66zueEvCeV5y9nTHdxW%2Fimage.png?alt=media\&token=1cc81bbc-69d5-441f-9816-3547b0afac6d)


2.  **Review output layer**

    *   Output layer will be saved in the _WorkingDS_ Dataset located in _IntersetionUpdate.gdb_. Output will be called _CTNIntersectionPoints\_Difference\_DATEofPROCESSING_

        ![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2FtWTng0sxkm3YcVwbHfLr%2Fimage.png?alt=media\&token=b0fd2bb4-6ae9-42ae-954f-b45e10fcdde6)
    *   Review _Potential Modification_ field to identified if intersection point is _New_ or was _Moved_ (_this is based on 100ft buffer in processing so **a quick manual review may be needed** to verify_)

        ![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2FLQSApKEIvRXVjsYQAz6F%2Fimage.png?alt=media\&token=14e47357-e0db-46a0-82bf-7b12ab314d67)


3. **Select and append all new intersection points**
   *   Select all _New/Moved_ intersection points that have been confirmed as new during the manual review and create selection layer.

       ![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2FtcCmGR7XJtax6m0t5oGe%2Fimage.png?alt=media\&token=f658eb6b-6616-4438-9b1e-1aba942952a1)
   *   Append all features from the selection layer into _CTN\_Intersection_ layer. Parameters to match below:

       ![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2FWGq5rPHW8U6wwY3fyjFn%2Fimage.png?alt=media\&token=743789de-f1d7-487c-8c04-1c4a0d25ab63)

4\. **Manually review and correct moved intersection point locations**

* The remaining _Moved_ intersection points can now be manually reviewed and corrected. Existing intersection points from the _CTN\_Intersections_ layer should be realigned to match the updated/corrected intersection location.

![](https://2080616366-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M3vG5OVht6_BV2LYSXk%2Fuploads%2Fn07esab470ZeyqMCtg42%2Fimage.png?alt=media\&token=e8d3611c-370c-420e-8a9c-dba27ec5248c)
