Bori in context: Street-network sprawl trends
Bori in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bori plotted against Rivers and Nigeria. The SNDi of new construction in Bori rose steadily, compared to Rivers which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Bori's incremental SNDi rose from 5.4 to 6.19 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bori ranked 15th out of 28 cities in Rivers and 368th out of 422 in Nigeria as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 6.19
- Rank in Nigeria
- 360th of 422
- Rank in Rivers
- 15th of 28
Entire Network (Aggregate)
- SNDi value
- 4.89
- Rank in Nigeria
- 368th of 422
- Rank in Rivers
- 15th of 28
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Bori built increasingly disconnected streets over time, while Linyi fluctuated in its street-construction patterns and Ashmoun built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Bori and Linyi both became progressively more disconnected, while Ashmoun became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Bori and Ashmoun have been growing further apart in their street-network character since 1975.