Ipswich in context: Street-network sprawl trends

Ipswich in context

3.244.8<19751976–19901991–20052006–2020SNDi of street additions
3.244.8<19751976–19901991–20052006–2020SNDi of entire street network
IpswichQueensland (Region)Australia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ipswich plotted against Queensland and Australia. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Ipswich's incremental SNDi fell from 5.17 to 4.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ipswich ranked 3rd out of 13 cities in Queensland and 14th out of 35 in Australia as of 2020.

New Street Additions (2006–2020)

SNDi value
4.37
Rank in Australia
27th of 35
Rank in Queensland
8th of 13

Entire Network (Aggregate)

SNDi value
3.45
Rank in Australia
14th of 35
Rank in Queensland
3rd of 13

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
IpswichKailahunPawapuri

In new street additions, Ipswich built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Kailahun built increasingly disconnected streets over time and Pawapuri built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Ipswich and Kailahun both became progressively more disconnected, while Pawapuri became progressively more connected. Ipswich and Kailahun have been growing further apart in their street-network character since 1975.