Bolgatanga in context: Street-network sprawl trends

Bolgatanga in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
BolgatangaUpper East (Region)Ghana (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bolgatanga plotted against Upper East and Ghana. The SNDi of new construction in Bolgatanga rose steadily, compared to Upper East which rose steadily and Ghana which followed a zig-zag trend with an overall increase. Most recently, Bolgatanga's incremental SNDi rose from 2.66 to 2.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bolgatanga ranked 2nd out of 2 cities in Upper East and 12th out of 53 in Ghana as of 2020.

New Street Additions (2006–2020)

SNDi value
2.86
Rank in Ghana
13th of 53
Rank in Upper East
2nd of 2

Entire Network (Aggregate)

SNDi value
2.36
Rank in Ghana
12th of 53
Rank in Upper East
2nd of 2

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
BolgatangaChengdeHuichang

In new street additions, Bolgatanga and Chengde both built increasingly disconnected streets over time, while Huichang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Bolgatanga and Chengde both became progressively more disconnected, while Huichang grew more disconnected from 1975 through 1991-2005, then improved.