Bourges in context: Street-network sprawl trends

Bourges in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bourges plotted against Centre-Val de Loire and France. The SNDi of new construction in Bourges peaked in 1976-1990, compared to Centre-Val de Loire which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Bourges's incremental SNDi fell from 3.46 to 3.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bourges ranked 3rd out of 4 cities in Centre-Val de Loire and 33rd out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.42
Rank in France
47th of 73
Rank in Centre-Val de Loire
4th of 4

Entire Network (Aggregate)

SNDi value
2.47
Rank in France
33rd of 73
Rank in Centre-Val de Loire
3rd of 4

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
BourgesParturZango

In new street additions, Bourges built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Partur built increasingly disconnected streets from 1975 through 1991-2005, then improved and Zango built increasingly disconnected streets over time. For the full network, Bourges and Partur both became progressively more disconnected, while Zango grew more disconnected from 1975 through 1991-2005, then improved. Notably, Bourges had a more connected network than Zango in 1975 but the two have since reversed their relative ranking.