Ishinomaki in context: Street-network sprawl trends

Ishinomaki in context

2.433.6<19751976–19901991–20052006–2020SNDi of street additions
2.433.6<19751976–19901991–20052006–2020SNDi of entire street network
IshinomakiMiyagi (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ishinomaki plotted against Miyagi and Japan. The SNDi of new construction in Ishinomaki peaked in 1976-1990, compared to Miyagi which peaked in 1976-1990 and Japan which followed a zig-zag trend with an overall increase. Most recently, Ishinomaki's incremental SNDi fell from 2.21 to 2.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ishinomaki ranked 2nd out of 4 cities in Miyagi and 92nd out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.17
Rank in Japan
39th of 135
Rank in Miyagi
1st of 4

Entire Network (Aggregate)

SNDi value
2.56
Rank in Japan
92nd of 135
Rank in Miyagi
2nd of 4

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

What about similarly populated cities?

051015<19751976–19901991–20052006–2020SNDi of street additions
051015<19751976–19901991–20052006–2020SNDi of entire street network
IshinomakiBhataparaAliganj

In new street additions, Ishinomaki built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Bhatapara built increasingly disconnected streets over time and Aliganj fluctuated in its street-construction patterns. For the full network, Ishinomaki grew more disconnected from 1975 through 1976-1990, then improved, while Bhatapara became progressively more disconnected and Aliganj fluctuated in connectivity. Ishinomaki and Bhatapara have been growing further apart in their street-network character since 1975.