As it turns 50, Rohnert Park still outwardly resembles the vision that led to its creation in 1962: A tightly planned suburb of look-alike neighborhoods, each with its own school and small-town amenities of parks, pools and convenient shopping centers. Change is under way in the form of major development projects on the city’s south, east and west edges.

Healdsburg City Council agreed Monday the most viable alternative for cyclists once Memorial Bridge closes for fix-it work next year is an old rail bridge.