Hachinohe in context: Street-network sprawl trends

Hachinohe in context

22.42.83.23.6<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.23.6<19751976–19901991–20052006–2020SNDi of entire street network
HachinoheAomori (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hachinohe plotted against Aomori and Japan. The SNDi of new construction in Hachinohe peaked in 1976-1990, compared to Aomori which peaked in 1976-1990 and Japan which followed a zig-zag trend with an overall increase. Most recently, Hachinohe's incremental SNDi fell from 3.31 to 2.78 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hachinohe ranked 3rd out of 3 cities in Aomori and 110th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.78
Rank in Japan
81st of 135
Rank in Aomori
3rd of 3

Entire Network (Aggregate)

SNDi value
2.83
Rank in Japan
110th of 135
Rank in Aomori
3rd of 3

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
HachinoheManzhouliPingnan

In new street additions, Hachinohe built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Manzhouli built increasingly disconnected streets from 1975 through 1991-2005, then improved and Pingnan fluctuated in its street-construction patterns. For the full network, Hachinohe and Manzhouli both grew more disconnected from 1975 through 1991-2005, then improved, while Pingnan fluctuated in connectivity.