Maybe it's a separate project by someone else?
(i.e. a more advanced project?)
Google maps shows River Road being straight.
That curved line is the former railway RoW - not sure if it's slated for a road (?)
or maybe it's already a road (looks preloaded) that lines up with jagged Corvette Way (?).
https://www.google.ca/maps/place/Bri...4d-123.1048001