Unknown Polyline Segmentation Source

Discussion created by benbran on Oct 10, 2013
Greetings all,

For the past few days I've been working on joining a segmented polyline into a continuous one for the purpose of creating a continuous route and continuous route measures. 

I've gone through and identified all of the gaps in the polyline, and systematically connected them.  There are thousands of gaps, so this has taken some time.  Unfortunately, when I re-run the routine for identifying gaps (Near Analysis on end points --> delete enpoints with a Near value of 0), I find that more have been created.  These new gaps are tiny (0.1mm) and they seem to occur in the same places where the previous gaps were, although this may not be true for all of them.  The previous gaps were closed by "snapping" the polyline endpoints together manually in an editing session. 

My question:  How could these gaps be created and how do I prevent it? 

I'm using ArcMap 10.2.