Santarém in context: Street-network sprawl trends

Santarem in context

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
SantaremPara (Region)Brazil (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Santarém plotted against Pará and Brazil. While Pará and Brazil both followed a zig-zag trend with an overall increase, Santarém's new street additions followed a zig-zag trend with an overall increase. Most recently, Santarém's incremental SNDi rose from 2.27 to 2.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Santarém ranked 3rd out of 16 cities in Pará and 57th out of 365 in Brazil as of 2020.

New Street Additions (2006–2020)

SNDi value
2.8
Rank in Brazil
140th of 365
Rank in Pará
11th of 16

Entire Network (Aggregate)

SNDi value
1.66
Rank in Brazil
57th of 365
Rank in Pará
3rd of 16

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

What about similarly populated cities?

0481216<19751976–19901991–20052006–2020SNDi of street additions
0481216<19751976–19901991–20052006–2020SNDi of entire street network
SantaremUdhampurKurigram

While Udhampur and Kurigram both built increasingly disconnected streets over time, Santarém fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Santarém and Kurigram have been growing further apart in their street-network character since 1975.