Douai in context: Street-network sprawl trends

Douai 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
DouaiHauts-de-France (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Douai plotted against Hauts-de-France and France. The SNDi of new construction in Douai rose steadily, compared to Hauts-de-France which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Douai's incremental SNDi rose from 3.53 to 4.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Douai ranked 9th out of 10 cities in Hauts-de-France and 44th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
4.73
Rank in France
62nd of 73
Rank in Hauts-de-France
10th of 10

Entire Network (Aggregate)

SNDi value
2.67
Rank in France
44th of 73
Rank in Hauts-de-France
9th of 10

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
DouaiParalakhemundiZirbi

Douai, Paralakhemundi, and Zirbi all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Douai and Paralakhemundi have been growing further apart in their street-network character since 1975.