Três Rios in context: Street-network sprawl trends

Tres Rios in context

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
Tres RiosRio de Janeiro (Region)Brazil (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Três Rios plotted against Rio de Janeiro and Brazil. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Três Rios's incremental SNDi rose from 4.37 to 9.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Três Rios ranked 16th out of 22 cities in Rio de Janeiro and 347th out of 365 in Brazil as of 2020.

New Street Additions (2006–2020)

SNDi value
9.59
Rank in Brazil
363rd of 365
Rank in Rio de Janeiro
21st of 22

Entire Network (Aggregate)

SNDi value
4.45
Rank in Brazil
347th of 365
Rank in Rio de Janeiro
16th of 22

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

What about similarly populated cities?

0369<19751976–19901991–20052006–2020SNDi of street additions
0369<19751976–19901991–20052006–2020SNDi of entire street network
Tres RiosChanderiGualeguaychu

In new street additions, Três Rios fluctuated in its street-construction patterns, while Chanderi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Gualeguaychu built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Três Rios and Gualeguaychu both became progressively more disconnected, while Chanderi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Três Rios had a more connected network than Chanderi in 1975 but the two have since reversed their relative ranking.