Soma in context: Street-network sprawl trends

Soma in context

1.82.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
1.82.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
SomaManisa (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Soma plotted against Manisa and Turkey. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Soma's incremental SNDi rose from 1.77 to 2.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Soma ranked 5th out of 6 cities in Manisa and 69th out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
2.04
Rank in Turkey
62nd of 174
Rank in Manisa
4th of 6

Entire Network (Aggregate)

SNDi value
1.88
Rank in Turkey
69th of 174
Rank in Manisa
5th of 6

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
SomaBhaderwahKyaukse

In new street additions, Soma and Kyaukse both fluctuated in its street-construction patterns, while Bhaderwah built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Soma and Kyaukse both fluctuated in connectivity, while Bhaderwah became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Soma and Kyaukse have been growing further apart in their street-network character since 1975.