Alaşehir in context: Street-network sprawl trends

Alasehir in context

11.522.5<19751976–19901991–20052006–2020SNDi of street additions
11.522.5<19751976–19901991–20052006–2020SNDi of entire street network
AlasehirManisa (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Alaşehir plotted against Manisa and Turkey. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Alaşehir's incremental SNDi rose from 1.19 to 1.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Alaşehir ranked 1st out of 6 cities in Manisa and 4th out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
1.5
Rank in Turkey
9th of 174
Rank in Manisa
1st of 6

Entire Network (Aggregate)

SNDi value
1.21
Rank in Turkey
4th of 174
Rank in Manisa
1st of 6

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

What about similarly populated cities?

1.42.12.8<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.8<19751976–19901991–20052006–2020SNDi of entire street network
AlasehirPeddapuramDeroua

In new street additions, Alaşehir fluctuated in its street-construction patterns, while Peddapuram built increasingly disconnected streets over time and Deroua built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Alaşehir and Peddapuram both became progressively more disconnected, while Deroua became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Alaşehir and Deroua have been converging in their street-network character since 1975.