Design of Urban Street Networks

1. Design of Urban Street Networks Norman W. GarrickLecture 8

2. Designing Connected Networks www.cnu.org/sites/www.cnu.org/files/sustainable_street_network_principles_op.pdf

3. Principles or Goals of Sustainable Street Network Design • Support community and place • Attract and sustain economic activities • Maximize transportation choice • Integrate with natural systems • Respect the existing natural and built environment • Emphasis walking as the fundamental unit of design • Work with other transportation networks

4. Characteristicsof a Sustainable Street Network • Maximize Connectivity • Provide Multiple Location where Different Transportation Networks Overlap • The network should be complex – rather than flat • Major Streets should be Multimodal and Frequent • All Streets should be Walkable • Wide variety of street types

5. Portmore, Jamaica – Regional Context

6. Portmore – City Context

7. Portmore – Neighborhood Context

8. Assessing PortmoreOn Street Network Characteristics • Maximize Connectivity Regional Scale – No City Wide Scale – No Neighborhood - No • Provide Multiple Location where Different Transportation Networks Overlap Marginal • The network should be complex – rather than flat No – flat design • Major Streets should be Multimodal and Frequent Major streets design for cars/too sparse • All Streets should be Walkable Major streets not walkable • Wide variety of street types Two or three street types at most

9. Prenzlauer Berg – Regional Context

10. Prenzlauer Berg – City Context

11. PrenzlauerbergBerlin

12. The Streets of Prenzlauer Berg Schoenhauser Allee The main street Prenzlauer Allee The second main street Pappelallee A neighborhood shopping street Raumerstrasse A neighborhood shopping street Goehrener Strasse A residential street

13. Assessing Prenzlauer BergOn Street Network Characteristics • Maximize Connectivity Regional Scale – Yes City Wide Scale – Yes Neighborhood - Yes • Provide Multiple Location where Different Transportation Networks Overlap Very Good • The network should be complex – rather than flat Very complex in terms of street types and types of connections • Major Streets should be Multimodal and Frequent Major streets multimodal and frequent • All Streets should be Walkable Major streets are all walkable • Wide variety of street types Numerous street types

14. Factors in Creating Diverse Street Type What are the factors contributing to difference between streets types? • Street cross-section design • Continuity of the street in the network • Type of intersection connection in the street network • Street alignment in the street network Note that these are a combination of • Features of the street itself, and • Features of the street network. For the best results, the street design should complement the street network design

15. Schoenhauser AlleeThe main street

16. SchoenhauserAlleeThe main street

17. Schoenhauser AlleeThe main street

18. Prenzlauer AlleeThe second main street

19. PappelalleeA neighborhood shopping street

20. PappelalleeA neighborhood shopping street

21. RaumerstrasseA neighborhood shopping street

22. Greigenhagener Strassesimilar to Goehrener StrasseA residential street