Where are these streets? I don’t see them in the “roads” list.
I do not play on mobile devices so my responses are fully biased toward computer web browsers.
All connecting roads/streets are under the Building Menu tab of "Roads" and do not strictly have "Road" or "Street" in the name of the building. To know which is which you will have to place your mouse over a selection to see if the size is "1x1" or "2x2".
The construction requirements for a building either state "Road required" or "Two-lane street required" and you can see the icons gives you an idea of what is needed... Road (1x1) as the dirt/stone/paved walkway with grass edges and the Streets (2x2) appears as tarmac with sidewalks.
What do you think?