Belfort in context: Street-network sprawl trends

Belfort 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
BelfortBourgogne-Franche-Comte (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Belfort plotted against Bourgogne-Franche-Comté and France. The SNDi of new construction in Belfort followed a zig-zag trend with an overall increase, compared to Bourgogne-Franche-Comté which rose steadily and France which peaked in 1991-2005. Most recently, Belfort's incremental SNDi rose from 2.56 to 3.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Belfort ranked 2nd out of 4 cities in Bourgogne-Franche-Comté and 10th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.71
Rank in France
51st of 73
Rank in Bourgogne-Franche-Comté
3rd of 4

Entire Network (Aggregate)

SNDi value
2.13
Rank in France
10th of 73
Rank in Bourgogne-Franche-Comté
2nd of 4

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

What about similarly populated cities?

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
BelfortKobokoTonghe

In new street additions, Belfort fluctuated in its street-construction patterns, while Koboko built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Tonghe built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Belfort and Tonghe both became progressively more disconnected, while Koboko became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Belfort and Koboko have been growing further apart in their street-network character since 1975.