Harrogate in context: Street-network sprawl trends

Harrogate in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
HarrogateEngland (Region)United Kingdom (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Harrogate plotted against England and United Kingdom. The SNDi of new construction in Harrogate peaked in 1976-1990, compared to England which peaked in 1991-2005 and United Kingdom which peaked in 1991-2005. Most recently, Harrogate's incremental SNDi fell from 3.58 to 3.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Harrogate ranked 8th out of 124 cities in England and 10th out of 143 in United Kingdom as of 2020.

New Street Additions (2006–2020)

SNDi value
3.57
Rank in United Kingdom
38th of 143
Rank in England
34th of 124

Entire Network (Aggregate)

SNDi value
2.91
Rank in United Kingdom
10th of 143
Rank in England
8th of 124

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
HarrogateSan Rafael del MojanArpora

In new street additions, Harrogate built increasingly disconnected streets from 1975 through 1976-1990, then improved, while San Rafael del Moján fluctuated in its street-construction patterns and Arpora built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Harrogate became progressively more disconnected, while San Rafael del Moján fluctuated in connectivity and Arpora became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Harrogate had a more sprawly network than San Rafael del Moján in 1975 but the two have since reversed their relative ranking.