Mantes-la-Ville in context: Street-network sprawl trends

Mantes-la-Ville in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
Mantes-la-VilleIle-de-France (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mantes-la-Ville plotted against Île-de-France and France. The SNDi of new construction in Mantes-la-Ville peaked in 1976-1990, compared to Île-de-France which peaked in 1976-1990 and France which peaked in 1991-2005. Most recently, Mantes-la-Ville's incremental SNDi fell from 3.41 to 3.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mantes-la-Ville ranked 5th out of 8 cities in Île-de-France and 58th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.18
Rank in France
35th of 73
Rank in Île-de-France
5th of 8

Entire Network (Aggregate)

SNDi value
2.96
Rank in France
58th of 73
Rank in Île-de-France
5th of 8

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
Mantes-la-VilleSan MateoShimm al Basal al Bahari

In new street additions, Mantes-la-Ville built increasingly disconnected streets from 1975 through 1976-1990, then improved, while San Mateo fluctuated in its street-construction patterns and Shimm al Basal al Bahari built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Mantes-la-Ville and San Mateo have been growing further apart in their street-network character since 1975.