Bognor Regis in context: Street-network sprawl trends

Bognor Regis in context

3.544.5<19751976–19901991–20052006–2020SNDi of street additions
3.544.5<19751976–19901991–20052006–2020SNDi of entire street network
Bognor RegisEngland (Region)United Kingdom (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bognor Regis plotted against England and United Kingdom. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Bognor Regis's incremental SNDi fell from 4.74 to 3.6 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bognor Regis ranked 89th out of 124 cities in England and 100th out of 143 in United Kingdom as of 2020.

New Street Additions (2006–2020)

SNDi value
3.6
Rank in United Kingdom
40th of 143
Rank in England
35th of 124

Entire Network (Aggregate)

SNDi value
3.86
Rank in United Kingdom
100th of 143
Rank in England
89th of 124

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
Bognor RegisPesaroJidong

In new street additions, Bognor Regis built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pesaro built increasingly disconnected streets from 1975 through 1976-1990, then improved and Jidong built increasingly disconnected streets over time. Looking at the full network, Pesaro and Jidong both became progressively more disconnected, while Bognor Regis grew more disconnected from 1975 through 1991-2005, then improved. Bognor Regis and Jidong have been converging in their street-network character since 1975.