I have an existing road network in a shapefile. I need to add two extra links/roads.

I added these as lines to the shapefile, making sure to 'split' the line in the original network to make a junction that the new line could 'snap' to. However, when I try to build the network it doesn't work.

It works fine when I delete the new road so it must be something I am doing wrong with the new road.

Are there stages I am missing?

Do I need to fill in the attributes of the new road (length) etc., and what is the quickest way to do this if so?

The dataset has many attributes so if I need to fill them in for new links, is it possible to find out which ones are needed in order to make the network? (as a lot of information is probably not used).

1 Answer 1


I had a similar problem.

After creating the new roads and adding them to the network, they would still be ignored by it. I resolved this by opening editor and selecting my original, old roads shape file. Then I just traced lines over the new roads, making sure there was a terminal vertex on each of the old roads I was trying to combine.

Saved the edits, rebuilt the network, and it worked like a charm.

You will have to re-add any attribute data from the new roads layer to the newly draw lines on the old road layer.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.