Yeah its weird that your using winston as an example as it does not even lead to Richmond. Also, narrow streets usually result in slow moving vehicles.
Second, the ramps for the garage connect to Wilmont & Roosevelt, and are likely all one garage. Either way on street parking can be banned if "traffic" is such a concern to those living there (public roads are well public)
Winston road width: ~6m ROW: ~12m
Wilmont road width: ~9m ROW: ~17.5m
Roosevelt Road width: ~8m ROW: ~20m
Plus there is also this dev as well -
https://skyscraperpage.com/forum/showthread.php?p=8067547