Both old and new suburbs do this. The street car suburbs (which date to the 1880s) had a grid and so you could get through, but often the streets are not easy to drive on. The latest suburbs are built with the idea of "the park will be here and people want to walk their dog and kids there". However suburbs between the 1970s and 2000s (very approximate) often didn't realize that would be important and so tended to be disconnected.

In all cases natural barriers like streams will disconnect things though, and knowing those existed they tended to build cul-de-sacs against them.