Warsaw in context: Street-network sprawl trends

Warsaw in context

1.82.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
WarsawMazowieckie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Warsaw plotted against Mazowieckie and Poland. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Warsaw's incremental SNDi rose from 3.25 to 3.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Warsaw ranked 2nd out of 6 cities in Mazowieckie and 32nd out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
3.4
Rank in Poland
36th of 63
Rank in Mazowieckie
3rd of 6

Entire Network (Aggregate)

SNDi value
2.33
Rank in Poland
32nd of 63
Rank in Mazowieckie
2nd of 6

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
WarsawViennaSan Diego

In new street additions, Warsaw and Vienna both built increasingly disconnected streets over time, while San Diego built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Warsaw and Vienna have been growing further apart in their street-network character since 1975.