Merge overlapping lines in ArcGIS
Dissolve Lines
update link (28th October 2014) http://resources.arcgis.com/en/help/main/10.2/index.html#//00170000005n000000 Single Part & DISSOLVE_LINES enable in the geoprocessing tool.
If you use an ArcEditor license you could start ArcCatalog and:
- make a personal Geodatabase.
- create a Feature Dataset in the Geodatabase.
- Import your Shapefile in the Feature Dataset.
- Create a Topology in the Feature Dataset.
- Set the Topology Rule "Must not overlap" for your Layer.
- Run the Topology Validation.
- Check the results in ArcMap - you need to add the Topology Error Layer.
This will markup all the overlapping lines.
Hope this helps you :-)