Arras in context: Street-network sprawl trends

Arras in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ArrasHauts-de-France (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Arras plotted against Hauts-de-France and France. The SNDi of new construction in Arras rose steadily, compared to Hauts-de-France which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Arras's incremental SNDi rose from 2.9 to 3.1 between 1991-2005 and 2006-2020. In terms of the aggregate network, Arras ranked 1st out of 10 cities in Hauts-de-France and 5th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.1
Rank in France
31st of 73
Rank in Hauts-de-France
3rd of 10

Entire Network (Aggregate)

SNDi value
2.01
Rank in France
5th of 73
Rank in Hauts-de-France
1st of 10

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
ArrasDaugavpilsHisua

In new street additions, Arras built increasingly disconnected streets over time, while Daugavpils built increasingly connected streets over time and Hisua fluctuated in its street-construction patterns. For the full network, Arras became progressively more disconnected, while Daugavpils became progressively more connected and Hisua became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Arras and Daugavpils have been converging in their street-network character since 1975.