Salt Lake City is not a walking city. The blocks are too big (660 feet x 660 feet) and the streets are too wide (132 feet) for that. This has translated into many of the streets have upwards of 6 lanes. To put this into further context, here is a block comparison chart from 99% Invisible:
In the past, I have called this inheritance one of the greatest city building challenges. Because once you've designed a city around the car, it can be hard to move away from that. But as I have also said in the past, there are, of course, lots of things that can be done to make a place more hospitable to pedestrians.
What is also interesting is that, according to 99% Invisible, the original intent for Salt Lake City's urban grid was not for its large 660 x 660 blocks to serve as a rigid and immutable plan for the city. The intent was that its large blocks would be further subdivided into smaller blocks as the city grew and developed.
Other than maybe a few examples, this never happened. Salt Lake City's large blocks remain a defining characteristic of the city. But who is to say it's too late for change?