Trends
9.31
SNDi (2020)73 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Shiheng
▸ Hover over bars to see values
The chart above shows, for each construction period in Shiheng, 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 16 km of street added at an SNDi of 11.68. Overall, the SNDi of new street additions followed a zig-zag trend with an overall decrease.
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Shiheng as of 2020, the overall level of street-network sprawl is 9.31, which is very sprawly.
Trends in street network construction
The SNDis of street construction for the respective time periods are 10.0, 11.68, 6.99 and 8.2. Disconnectivity in street construction in Shiheng 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 Shiheng spans a total of 73 kilometers. The period with the greatest volume of street construction was 2006-2020. These roads have an SNDi of 8.2, 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 10.0, 10.78, 9.57 and 9.31. The aggregate street network in Shiheng increased in disconnectivity initially,but the trend has turned around after 1990.