Vihiga in context: Street-network sprawl trends

Vihiga in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
VihigaKenya (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Vihiga plotted against Kenya. The SNDi of new construction in Vihiga peaked in 1991-2005, while Kenya rose steadily. Most recently, Vihiga's incremental SNDi fell from 4.81 to 4.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vihiga ranked 21st out of 45 in Kenya as of 2020.

New Street Additions (2006–2020)

SNDi value
4.8
Rank in Kenya
26th of 45

Entire Network (Aggregate)

SNDi value
3.73
Rank in Kenya
21st of 45

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
VihigaQixianChhatrapur

In new street additions, Vihiga built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Qixian built increasingly disconnected streets from 1975 through 1976-1990, then improved and Chhatrapur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Vihiga became progressively more disconnected, while Qixian grew more disconnected from 1975 through 1976-1990, then improved and Chhatrapur became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Vihiga had a more connected network than Qixian in 1975 but the two have since reversed their relative ranking.