Short block lengths and well-connected and dense street networks encourage walking and bicycling, reduce vehicle traffic and enhance traffic flow.

Short block lengths and a well-connected street network in urban areas improve mobility by allowing people, bicycles, and vehicles multiple, more direct routes to a destination. This makes destinations and transit stations more accessible, increases foot traffic for local businesses, and makes walking more interesting.

Limit block lengths in urban areas to a maximum of 150 meters (500 feet) and:

  • Keep block size roughly 300 to 600 meters (1000 to 2000 feet) in perimeter;
  • Shorten block lengths closer to district centers;
  • Create pedestrian pathways through block lengths greater than 150 meters;
  • Plan for a minimum of 50 intersections per square kilometer (130 intersection per square mile); and
  • Encourage street-level activity.