Sapele in context: Street-network sprawl trends
Sapele in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sapele plotted against Delta and Nigeria. While Delta and Nigeria both followed a zig-zag trend with an overall increase, Sapele's new street additions followed a zig-zag trend with an overall increase. Most recently, Sapele's incremental SNDi rose from 4.81 to 5.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sapele ranked 14th out of 20 cities in Delta and 350th out of 422 in Nigeria as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.5
- Rank in Nigeria
- 317th of 422
- Rank in Delta
- 13th of 20
Entire Network (Aggregate)
- SNDi value
- 4.56
- Rank in Nigeria
- 350th of 422
- Rank in Delta
- 14th of 20
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Sapele fluctuated in its street-construction patterns, while Kaluga built increasingly disconnected streets from 1975 through 1991-2005, then improved and Cagliari built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Sapele and Cagliari have been growing further apart in their street-network character since 1975.