Słupsk in context: Street-network sprawl trends

Slupsk in context

1.42.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
SlupskPomorskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Słupsk plotted against Pomorskie and Poland. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Słupsk's incremental SNDi rose from 3.39 to 3.58 between 1991-2005 and 2006-2020. In terms of the aggregate network, Słupsk ranked 2nd out of 6 cities in Pomorskie and 23rd out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
3.58
Rank in Poland
41st of 63
Rank in Pomorskie
4th of 6

Entire Network (Aggregate)

SNDi value
2.15
Rank in Poland
23rd of 63
Rank in Pomorskie
2nd of 6

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
SlupskBaberuHelmond

In new street additions, Słupsk built increasingly disconnected streets over time, while Baberu built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Helmond built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Słupsk became progressively more disconnected, while Baberu became progressively more connected and Helmond grew more disconnected from 1975 through 1991-2005, then improved. Słupsk and Baberu have been converging in their street-network character since 1975.