Bergamo in context: Street-network sprawl trends

Bergamo in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
BergamoLombardia (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bergamo plotted against Lombardia and Italy. The SNDi of new construction in Bergamo peaked in 1976-1990, compared to Lombardia which peaked in 1976-1990 and Italy which peaked in 1991-2005. Most recently, Bergamo's incremental SNDi fell from 4.18 to 3.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bergamo ranked 9th out of 11 cities in Lombardia and 76th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.95
Rank in Italy
55th of 88
Rank in Lombardia
7th of 11

Entire Network (Aggregate)

SNDi value
3.46
Rank in Italy
76th of 88
Rank in Lombardia
9th of 11

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

What about similarly populated cities?

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
BergamoYining/QuljaHamilton

In new street additions, Bergamo built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Yining/Qulja built increasingly disconnected streets over time and Hamilton fluctuated in its street-construction patterns. For the full network, Bergamo and Hamilton both became progressively more disconnected, while Yining/Qulja became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.