Bimbilla in context: Street-network sprawl trends

Bimbilla in context

2.12.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
BimbillaNorthern (Region)Ghana (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bimbilla plotted against Northern and Ghana. The SNDi of new construction in Bimbilla was at its lowest in 1991-2005, compared to Northern which was at its lowest in 1991-2005 and Ghana which followed a zig-zag trend with an overall increase. Most recently, Bimbilla's incremental SNDi rose from 2.91 to 3.07 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bimbilla ranked 5th out of 5 cities in Northern and 19th out of 53 in Ghana as of 2020.

New Street Additions (2006–2020)

SNDi value
3.07
Rank in Ghana
14th of 53
Rank in Northern
5th of 5

Entire Network (Aggregate)

SNDi value
3.33
Rank in Ghana
19th of 53
Rank in Northern
5th of 5

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
BimbillaYuanbaoshanJishan

In new street additions, Bimbilla built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Yuanbaoshan built increasingly disconnected streets from 1975 through 1991-2005, then improved and Jishan built increasingly connected streets over time. For the full network, Bimbilla and Jishan both became progressively more connected, while Yuanbaoshan became progressively more disconnected. Bimbilla and Yuanbaoshan have been converging in their street-network character since 1975.