Gwandu in context: Street-network sprawl trends

Gwandu in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
GwanduKebbi (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gwandu plotted against Kebbi and Nigeria. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Gwandu's incremental SNDi rose from 2.94 to 4.03 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gwandu ranked 10th out of 12 cities in Kebbi and 203rd out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.03
Rank in Nigeria
191st of 422
Rank in Kebbi
12th of 12

Entire Network (Aggregate)

SNDi value
3.14
Rank in Nigeria
203rd of 422
Rank in Kebbi
10th of 12

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

What about similarly populated cities?

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
GwanduShamakhiTimberlea

In new street additions, Gwandu fluctuated in its street-construction patterns, while Shamakhi built increasingly disconnected streets from 1975 through 1976-1990, then improved and Timberlea built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Gwandu fluctuated in connectivity, while Shamakhi grew more disconnected from 1975 through 1991-2005, then improved and Timberlea became progressively more connected. Notably, Gwandu had a more connected network than Shamakhi in 1975 but the two have since reversed their relative ranking.