Jyväskylä in context: Street-network sprawl trends

Jyvaskyla in context

1.522.53<19751976–19901991–20052006–2020SNDi of street additions
1.522.53<19751976–19901991–20052006–2020SNDi of entire street network
JyvaskylaWestern Finland (Region)Finland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jyväskylä plotted against Western Finland and Finland. The SNDi of new construction in Jyväskylä was at its lowest in 1976-1990, compared to Western Finland which rose steadily and Finland which rose steadily. Most recently, Jyväskylä's incremental SNDi rose from 1.81 to 2.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jyväskylä ranked 1st out of 4 cities in Western Finland and 2nd out of 6 in Finland as of 2020.

New Street Additions (2006–2020)

SNDi value
2.04
Rank in Finland
5th of 6
Rank in Western Finland
3rd of 4

Entire Network (Aggregate)

SNDi value
1.49
Rank in Finland
2nd of 6
Rank in Western Finland
1st of 4

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
JyvaskylaHuadeChachaura-Binaganj

In new street additions, Jyväskylä built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Huade built increasingly disconnected streets from 1975 through 1991-2005, then improved and Chachaura-Binaganj fluctuated in its street-construction patterns. For the full network, Jyväskylä became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Huade grew more disconnected from 1975 through 1991-2005, then improved and Chachaura-Binaganj fluctuated in connectivity.