Bojnurd in context: Street-network sprawl trends

Bojnurd in context

2.42.83.23.6<19751976–19901991–20052006–2020SNDi of street additions
2.42.83.23.6<19751976–19901991–20052006–2020SNDi of entire street network
BojnurdNorth Khorasan (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bojnurd plotted against North Khorasan and Iran. The SNDi of new construction in Bojnurd fell steadily, compared to North Khorasan which fell steadily and Iran which rose steadily. Most recently, Bojnurd's incremental SNDi fell from 2.51 to 2.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bojnurd ranked 1st out of 3 cities in North Khorasan and 45th out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
2.47
Rank in Iran
23rd of 169
Rank in North Khorasan
1st of 3

Entire Network (Aggregate)

SNDi value
2.53
Rank in Iran
45th of 169
Rank in North Khorasan
1st of 3

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
BojnurdKarauliSreemangal

While Karauli and Sreemangal both built increasingly disconnected streets over time, Bojnurd built increasingly connected streets over time in new street additions. Looking at the full network, Karauli and Sreemangal both became progressively more disconnected, while Bojnurd became progressively more connected. Bojnurd and Karauli have been converging in their street-network character since 1975.