Ashgabat in context: Street-network sprawl trends

Ashgabat in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
AshgabatAsgabat (Region)Turkmenistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ashgabat plotted against Aşgabat and Turkmenistan. The SNDi of new construction in Ashgabat peaked in 1976-1990, compared to Aşgabat which peaked in 1976-1990 and Turkmenistan which followed a zig-zag trend with an overall increase. Most recently, Ashgabat's incremental SNDi fell from 2.45 to 2.23 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ashgabat ranked 2nd out of 2 cities in Aşgabat and 3rd out of 10 in Turkmenistan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.23
Rank in Turkmenistan
2nd of 10
Rank in Aşgabat
1st of 2

Entire Network (Aggregate)

SNDi value
2.46
Rank in Turkmenistan
3rd of 10
Rank in Aşgabat
2nd of 2

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
AshgabatUfaBanjarmasin

While Ufa and Banjarmasin both built increasingly disconnected streets over time, Ashgabat built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Ufa and Banjarmasin both became progressively more disconnected, while Ashgabat grew more disconnected from 1975 through 1976-1990, then improved. Notably, Ashgabat had a more sprawly network than Ufa in 1975 but the two have since reversed their relative ranking.