Trends
2.17
SNDi (2020)190 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Richard-Toll
▸ Hover over bars to see values
The chart above shows, for each construction period in Richard-Toll, the SNDi of new street additions (bar height) and the volume added (bar width), so that bar area reflects the total disconnectedness burden of that period's construction. The 2006-2020 period contributed the greatest disconnectedness burden, with 66 km of street added at an SNDi of 2.28. Overall, the SNDi of new street additions followed a zig-zag trend with an overall increase.
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Richard-Toll as of 2020, the overall level of street-network sprawl is 2.17, which is well-connected.
Trends in street network construction
The SNDis of street construction for the respective time periods are 2.23, 2.45, 1.89 and 2.28. Disconnectivity in street construction in Richard-Toll follows a zig-zag trend. In 1991-2005, street construction was most disconnected, while construction was most connected in 1976-1990.
Quantity of street network construction
The street network in Richard-Toll spans a total of 190 kilometers. The period with the greatest volume of street construction was 2006-2020. These roads have an SNDi of 2.28, which is well-connected.
Effect on the aggregate network
New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 2.23, 2.33, 2.12 and 2.17. Disconnectivity in Richard-Toll's street network follows a zig-zag trend. In 1991-2005, the city was most disconnected; while it was most connected in 1976-1990.