Extracting Raster Values by Polyline End Points using ArcGIS Desktop?

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I am looking for a way to extract elevations of end points for line data in ArcMap 10.2. I have a road dataset that I want to use as a Network Dataset in Network Analyst. I want to be able to set the elevation change from the beginning of the line to the end of the line.

So I can implement the elevation similar to what they have here in step 20.

The data available: Roads Dataset, 5m DEM



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