Dunkirk in context: Street-network sprawl trends

Dunkirk in context

1.82.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
DunkirkHauts-de-France (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dunkirk plotted against Hauts-de-France and France. The SNDi of new construction in Dunkirk rose steadily, compared to Hauts-de-France which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Dunkirk's incremental SNDi rose from 2.91 to 3.31 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dunkirk ranked 3rd out of 10 cities in Hauts-de-France and 8th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.31
Rank in France
42nd of 73
Rank in Hauts-de-France
5th of 10

Entire Network (Aggregate)

SNDi value
2.11
Rank in France
8th of 73
Rank in Hauts-de-France
3rd of 10

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
DunkirkKanlipinarFaridkot

In new street additions, Dunkirk and Faridkot both built increasingly disconnected streets over time, while Kanlıpınar fluctuated in its street-construction patterns. For the full network, Dunkirk and Faridkot both became progressively more disconnected, while Kanlıpınar grew more disconnected from 1975 through 1976-1990, then improved. Dunkirk and Kanlıpınar have been converging in their street-network character since 1975.