Trends
2.99
SNDi (2020)220 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Nakhchivan
▸ Hover over bars to see values
The chart above shows, for each construction period in Nakhchivan, 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 1975 period contributed the greatest disconnectedness burden, with 160 km of street added at an SNDi of 3.11. Overall, the SNDi of new street additions fell steadily.
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Nakhchivan as of 2020, the overall level of street-network sprawl is 2.99, which is moderately connected.
Trends in street network construction
The SNDis of street construction for the respective time periods are 3.11, 2.69, 2.63 and 1.81. In each period, new street development in Nakhchivan steadily grows more connected than in the last. This decrease has quickened: between 1975 and 1976-1990, SNDi fell by 0.43 points, but between 1991-2005 and 2006-2020, it fell by just 0.82.
Quantity of street network construction
The street network in Nakhchivan spans a total of 220 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 3.11, which is moderately 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 3.11, 3.06, 2.99 and 2.99. Overall, the SNDi of the aggregate street network has fallen: the street network in Nakhchivan has become more connected.