I just got back from the Netherlands, which is an interesting contrast. They use probably the same amount of space as a six lane stroad in some places, but instead of being entirely for cars, it looks like this:

- 1 or 2 car lanes (each way)

- a tram line (one each way on each side of the street, or in the middle)

- a separated, 2 way bike lane on either side of the street

- a separated (from the bike lane) sidewalk

- a canal

As you can imagine, this takes up a lot of space. Despite this, things feel much more walkable. The reason? No enormous parking lots around every store. Parking is generally almost entirely done at P+R parking lots outside of town, then taking public transit in.