Bo in context: Street-network sprawl trends

Bo in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
BoSouthern (Region)Sierra Leone (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bo plotted against Southern and Sierra Leone. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Bo's incremental SNDi rose from 5.64 to 6.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bo ranked 1st out of 1 cities in Southern and 9th out of 12 in Sierra Leone as of 2020.

New Street Additions (2006–2020)

SNDi value
6.34
Rank in Sierra Leone
6th of 12
Rank in Southern
1st of 1

Entire Network (Aggregate)

SNDi value
5.18
Rank in Sierra Leone
9th of 12
Rank in Southern
1st of 1

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
BoYuanlin CityJaranwala

In new street additions, Bo built increasingly disconnected streets over time, while Yuanlin City fluctuated in its street-construction patterns and Jaranwala built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Bo and Yuanlin City have been growing further apart in their street-network character since 1975.