Nancy in context: Street-network sprawl trends

Nancy in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
NancyGrand Est (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nancy plotted against Grand Est and France. While Grand Est and France both peaked in 1991-2005, Nancy's new street additions peaked in 1991-2005. Most recently, Nancy's incremental SNDi fell from 3.27 to 2.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nancy ranked 6th out of 7 cities in Grand Est and 27th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
2.8
Rank in France
21st of 73
Rank in Grand Est
3rd of 7

Entire Network (Aggregate)

SNDi value
2.38
Rank in France
27th of 73
Rank in Grand Est
6th of 7

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
NancyHulunbuirArraijan

In new street additions, Nancy and Hulunbuir both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Arraiján built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Nancy and Hulunbuir have been growing further apart in their street-network character since 1975.