Trends
10.43
SNDi (2020)42 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Samchon
▸ Hover over bars to see values
The chart above shows, for each construction period in Samchon, 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 24 km of street added at an SNDi of 12.28. 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 Samchon as of 2020, the overall level of street-network sprawl is 10.43, which is very sprawly.
Trends in street network construction
The SNDis of street construction for the respective time periods are 7.48, 12.28, 10.54 and 11.73. Disconnectivity in street construction in Samchon follows a zig-zag trend. In 1975, street construction was most disconnected, while construction was most connected in 1976-1990.
Quantity of street network construction
The street network in Samchon spans a total of 42 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 12.28, 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 7.48, 10.3, 10.33 and 10.43. Overall, the SNDi of the aggregate street network has risen: the street network in Samchon has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 2.81 points, but between 1991-2005 and 2006-2020, it rose by just 0.1.