Walewale in context: Street-network sprawl trends

Walewale in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
WalewaleNorth East (Region)Ghana (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Walewale plotted against North East and Ghana. The SNDi of new construction in Walewale was at its lowest in 1976-1990, compared to North East which followed a zig-zag trend with an overall increase and Ghana which followed a zig-zag trend with an overall increase. Most recently, Walewale's incremental SNDi rose from 1.13 to 1.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Walewale ranked 1st out of 1 cities in North East and 2nd out of 53 in Ghana as of 2020.

New Street Additions (2006–2020)

SNDi value
1.59
Rank in Ghana
2nd of 53
Rank in North East
1st of 1

Entire Network (Aggregate)

SNDi value
1.23
Rank in Ghana
2nd of 53
Rank in North East
1st of 1

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
WalewaleHuangyuanPangalah

In new street additions, Walewale built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Huangyuan fluctuated in its street-construction patterns and Pangalah built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Walewale became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Huangyuan fluctuated in connectivity and Pangalah grew more disconnected from 1975 through 1991-2005, then improved. Walewale and Huangyuan have been growing further apart in their street-network character since 1975.