Łomża in context: Street-network sprawl trends

Lomza 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
LomzaPodlaskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Łomża plotted against Podlaskie and Poland. The SNDi of new construction in Łomża peaked in 1991-2005, compared to Podlaskie which rose steadily and Poland which rose steadily. Most recently, Łomża's incremental SNDi fell from 2.65 to 2.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Łomża ranked 1st out of 3 cities in Podlaskie and 7th out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
2.4
Rank in Poland
8th of 63
Rank in Podlaskie
1st of 3

Entire Network (Aggregate)

SNDi value
1.82
Rank in Poland
7th of 63
Rank in Podlaskie
1st of 3

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
LomzaSirohiTian Jin Jing Ji Ji Zhu Kai Fa Qu Xi Qu

In new street additions, Łomża built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Sirohi fluctuated in its street-construction patterns and 天津经济技术开发区西区 built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Łomża became progressively more disconnected, while Sirohi became progressively more connected and 天津经济技术开发区西区 grew more disconnected from 1975 through 1976-1990, then improved. Łomża and Sirohi have been growing further apart in their street-network character since 1975.