Runcorn in context: Street-network sprawl trends

Runcorn in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
RuncornEngland (Region)United Kingdom (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Runcorn plotted against England and United Kingdom. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Runcorn's incremental SNDi fell from 5.65 to 3.7 between 1991-2005 and 2006-2020. In terms of the aggregate network, Runcorn ranked 47th out of 124 cities in England and 54th out of 143 in United Kingdom as of 2020.

New Street Additions (2006–2020)

SNDi value
3.7
Rank in United Kingdom
45th of 143
Rank in England
40th of 124

Entire Network (Aggregate)

SNDi value
3.44
Rank in United Kingdom
54th of 143
Rank in England
47th of 124

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
RuncornWenNuevo Chimbote

In new street additions, Runcorn and Nuevo Chimbote both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Wen built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Runcorn and Wen have been converging in their street-network character since 1975.