Sheffield in context: Street-network sprawl trends

Sheffield in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
SheffieldEngland (Region)United Kingdom (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sheffield plotted against England and United Kingdom. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Sheffield's incremental SNDi fell from 3.95 to 3.48 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sheffield ranked 3rd out of 124 cities in England and 4th out of 143 in United Kingdom as of 2020.

New Street Additions (2006–2020)

SNDi value
3.48
Rank in United Kingdom
28th of 143
Rank in England
24th of 124

Entire Network (Aggregate)

SNDi value
2.71
Rank in United Kingdom
4th of 143
Rank in England
3rd of 124

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
SheffieldFerganaDamietta

In new street additions, Sheffield built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Fergana built increasingly disconnected streets over time and Damietta fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend.