Sar-e Pol in context: Street-network sprawl trends

Sar-e Pol in context

3.244.85.66.4<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.66.4<19751976–19901991–20052006–2020SNDi of entire street network
Sar-e PolSari Pul (Region)Afghanistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sar-e Pol plotted against Sari Pul and Afghanistan. The SNDi of new construction in Sar-e Pol peaked in 1976-1990, compared to Sari Pul which peaked in 1976-1990 and Afghanistan which followed a zig-zag trend with an overall increase. Most recently, Sar-e Pol's incremental SNDi fell from 5.45 to 3.6 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sar-e Pol ranked 2nd out of 3 cities in Sari Pul and 48th out of 73 in Afghanistan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.6
Rank in Afghanistan
28th of 73
Rank in Sari Pul
2nd of 3

Entire Network (Aggregate)

SNDi value
4.74
Rank in Afghanistan
48th of 73
Rank in Sari Pul
2nd of 3

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
Sar-e PolSoranHarsidhi

Sar-e Pol, Soran, and Harsidhi all built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street construction. Looking at the full network, Soran and Harsidhi both grew more disconnected from 1975 through 1976-1990, then improved, while Sar-e Pol grew more disconnected from 1975 through 1991-2005, then improved. Notably, Sar-e Pol had a more connected network than Soran in 1975 but the two have since reversed their relative ranking.