Mito in context: Street-network sprawl trends

Mito in context

2.12.42.73<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.73<19751976–19901991–20052006–2020SNDi of entire street network
MitoIbaraki (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mito plotted against Ibaraki and Japan. While Ibaraki and Japan both followed a zig-zag trend with an overall increase, Mito's new street additions followed a zig-zag trend with an overall increase. Most recently, Mito's incremental SNDi rose from 2.62 to 3.07 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mito ranked 7th out of 7 cities in Ibaraki and 80th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.07
Rank in Japan
90th of 135
Rank in Ibaraki
6th of 7

Entire Network (Aggregate)

SNDi value
2.46
Rank in Japan
80th of 135
Rank in Ibaraki
7th of 7

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
MitoZaozhuangPudukkottai

In new street additions, Mito fluctuated in its street-construction patterns, while Zaozhuang built increasingly disconnected streets from 1975 through 1976-1990, then improved and Pudukkottai built increasingly disconnected streets over time. For the full network, Mito and Pudukkottai both became progressively more disconnected, while Zaozhuang grew more disconnected from 1975 through 1991-2005, then improved. Mito and Pudukkottai have been converging in their street-network character since 1975.