Butler in context: Street-network sprawl trends

Butler 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
ButlerWestern Australia (Region)Australia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Butler plotted against Western Australia and Australia. The SNDi of new construction in Butler fell steadily, compared to Western Australia which peaked in 1991-2005 and Australia which peaked in 1991-2005. Most recently, Butler's incremental SNDi fell from 3.32 to 1.93 between 1991-2005 and 2006-2020. In terms of the aggregate network, Butler ranked 1st out of 4 cities in Western Australia and 4th out of 35 in Australia as of 2020.

New Street Additions (2006–2020)

SNDi value
1.93
Rank in Australia
2nd of 35
Rank in Western Australia
1st of 4

Entire Network (Aggregate)

SNDi value
2.62
Rank in Australia
4th of 35
Rank in Western Australia
1st of 4

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
ButlerAmbadTukh al Qaramuss wa Kafr Sarkis Mansur

In new street additions, Butler built increasingly connected streets over time, while Ambad built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Tukh al Qaramuss wa Kafr Sarkis Mansur fluctuated in its street-construction patterns. For the full network, Butler became progressively more connected, while Ambad became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Tukh al Qaramuss wa Kafr Sarkis Mansur became progressively more disconnected. Butler and Ambad have been converging in their street-network character since 1975.