Trends
10.02
SNDi (2020)180 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Nandail
▸ Hover over bars to see values
The chart above shows, for each construction period in Nandail, 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 1976-1990 period contributed the greatest disconnectedness burden, with 120 km of street added at an SNDi of 10.28. Overall, the SNDi of new street additions peaked in 1991-2005.
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Nandail as of 2020, the overall level of street-network sprawl is 10.02, which is very sprawly.
Trends in street network construction
The SNDis of street construction for the respective time periods are 7.52, 10.28, 10.91 and 9.59. Street construction in Nandail increased in disconnectivity initially but has since improved. The streets constructed in 1991-2005 were the most disconnected.
Quantity of street network construction
The street network in Nandail spans a total of 180 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 10.28, which is very sprawly.
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 7.52, 9.91, 10.14 and 10.02. The aggregate street network in Nandail increased in disconnectivity initially,but the trend has turned around after 2000.