Abstract: Market Street is considered one of the Great Streets in America. Notice it is very walkable, but doesn't have very much walk space. What they have they use well, but it is more about the buildings.
Abstract: 16th Street Mall is a fantastic street! The mall shuttle carries over 50,000 riders per day - more than many multi-route light rail systems.
It has a 22-foot pedestrian zone in the middle and 10-foot shuttle paths on either side. The sidewalks are generally 19 feet on both sides. Double rows of honey locust trees and specially designed post lanterns in the pedestrian median provide shade and appropriate lighting while allowing for visibility of the buildings (and business tenants) running the length of the street.