This video shows the Broadway Corridor of Seattle’s First Hill Streetcar project.
In five auto lane widths of roadway you can see room for a separated cycle track, automobile traffic, bus and streetcar traffic, dedicated turn lanes, and it looks like maybe some parking (plus ample sidewalks with trees). It really shows how you can pack a lot of transportation modality into a not too big roadway. Of course Providence is a place where we have a lot of not too big roadways.
What roads in Providence could you see done up in a similar fashion?