Isfara in context: Street-network sprawl trends

Isfara in context

3.64.55.46.3<19751976–19901991–20052006–2020SNDi of street additions
3.64.55.46.3<19751976–19901991–20052006–2020SNDi of entire street network
IsfaraSughd (Region)Tajikistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Isfara plotted against Sughd and Tajikistan. The SNDi of new construction in Isfara peaked in 1991-2005, compared to Sughd which rose steadily and Tajikistan which followed a zig-zag trend with an overall increase. Most recently, Isfara's incremental SNDi fell from 4.55 to 3.53 between 1991-2005 and 2006-2020. In terms of the aggregate network, Isfara ranked 5th out of 8 cities in Sughd and 9th out of 22 in Tajikistan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.53
Rank in Tajikistan
3rd of 22
Rank in Sughd
3rd of 8

Entire Network (Aggregate)

SNDi value
4.13
Rank in Tajikistan
9th of 22
Rank in Sughd
5th of 8

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
IsfaraConstanceNanhua

In new street additions, Isfara and Constance both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Nanhua fluctuated in its street-construction patterns. Looking at the full network, Constance and Nanhua both became progressively more disconnected, while Isfara grew more disconnected from 1975 through 1991-2005, then improved. Notably, Isfara had a more sprawly network than Nanhua in 1975 but the two have since reversed their relative ranking.