Montbéliard in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Montbéliard plotted against Bourgogne-Franche-Comté and France. The SNDi of new construction in Montbéliard 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, Montbéliard's incremental SNDi rose from 3.69 to 3.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Montbéliard ranked 4th out of 4 cities in Bourgogne-Franche-Comté and 57th out of 73 in France as of 2020.

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

What about similarly populated cities?

• Katrisarai, India
• Gangtou, China
• Cataguases, Brazil
• Bergama, Turkey
• Lahti, Finland
• Minyat al Hayt, Egypt

In new street additions, Montbéliard fluctuated in its street-construction patterns, while Katrisarai fluctuated in its street-construction patterns and Bergama built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Montbéliard became progressively more disconnected, while Katrisarai fluctuated in connectivity and Bergama grew more disconnected from 1975 through 1991-2005, then improved. Montbéliard and Katrisarai have been converging in their street-network character since 1975.