New answers tagged topology
There are many topology tools in ArcGIS but you need at least Standard or advanced licence. As you can use "feature to polygon" and topology check, I assume you do have it. Therefore you can add the "topology toolbar" (for 9.3 or for 10). There is a tool called topology edit tool that will do what you want.
Your problem is of a different nature since your network is not routable as explained in pgrouting unexpected output dkastl already explained how it would work if your input data was correct.
The tolerance value is in the same unit as your geometry. When the distance between start/end point of two linestring geometries is smaller than the tolerance, then the topology function assumes, that these two points are connected. This means, both points get snapped together. The unit of the tolerance value is in most cases either meter or degree, which ...
I don't know of any off-the-shelf solution. However, here's an idea which you could work up into a script or possibly in Model Builder (WARNING- I don't have ArcGIS to hand, so can't test it, and some experimentation will be needed): Convert the polygons to lines Collapse dual lines to center lines. This will give something close to a straight skeleton ...
If you run an intersection between the 2 different line feature classes, and specify the output type to be Point, then you should be able to do a count of the ids in the point table of the input lines.
In QGIS 2.0, the Topology Checker tolerance functionality is not implemented for any of the available topological rules. See the source code at Github, in particular topolTest.cpp. It was part of the wish list in the original merge request. I submitted a bug report (Bug #9621) to the development team asking for the tolerance column to be removed.
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