Lens in context: Street-network sprawl trends

Lens in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
LensHauts-de-France (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lens plotted against Hauts-de-France and France. The SNDi of new construction in Lens followed a zig-zag trend with an overall increase, compared to Hauts-de-France which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Lens's incremental SNDi rose from 3.32 to 3.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lens ranked 6th out of 10 cities in Hauts-de-France and 35th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.39
Rank in France
45th of 73
Rank in Hauts-de-France
6th of 10

Entire Network (Aggregate)

SNDi value
2.54
Rank in France
35th of 73
Rank in Hauts-de-France
6th of 10

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

What about similarly populated cities?

4812<19751976–19901991–20052006–2020SNDi of street additions
4812<19751976–19901991–20052006–2020SNDi of entire street network
LensAfamollaGangu

In new street additions, Lens and Gangu both fluctuated in its street-construction patterns, while Afamolla built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Lens and Gangu have been growing further apart in their street-network character since 1975.