600 East between 200 and 400 South prioritized for pedestrians and bicyclists, Salt Lake City
While of course I support any effort to rebalance street right of way to better serve pedestrians, bicyclists, and transit users, it's tough to do in places where mobility is dominated by the automobile.
This example illustrates the point I make that you need a lot of pedestrian/cyclist activity to make this work. A couple people crossed from one side of the street to the other, but otherwise there were no people. And this is an area with a lot of retail and a major spine for the light rail and bus system.
My recommendation always is to start small, on a block or two where there is already high pedestrian activity, and not think about long stretches, until you have the activity that can support.
And the corollary of this point is to start where you know you'll be wildly successful. This is necessary because especially in an automobile-dominated land use and transportation paradigm you're going to get a lot of pushback.
Empty sidewalks, pedestrianized blocks, and bike lanes make it that much harder to expand and create more spaces for pedestrians, cyclists, and transit users.