Bacabal in context: Street-network sprawl trends

Bacabal in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
BacabalMaranhao (Region)Brazil (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bacabal plotted against Maranhão and Brazil. The SNDi of new construction in Bacabal peaked in 1991-2005, compared to Maranhão which followed a zig-zag trend with an overall increase and Brazil which followed a zig-zag trend with an overall increase. Most recently, Bacabal's incremental SNDi fell from 4.54 to 3.2 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bacabal ranked 11th out of 11 cities in Maranhão and 297th out of 365 in Brazil as of 2020.

New Street Additions (2006–2020)

SNDi value
3.2
Rank in Brazil
179th of 365
Rank in Maranhão
10th of 11

Entire Network (Aggregate)

SNDi value
3.35
Rank in Brazil
297th of 365
Rank in Maranhão
11th of 11

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

What about similarly populated cities?

234<19751976–19901991–20052006–2020SNDi of street additions
234<19751976–19901991–20052006–2020SNDi of entire street network
BacabalZhouzhiUch Sharif

In new street additions, Bacabal and Zhouzhi both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Uch Sharif built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Bacabal grew more disconnected from 1975 through 1991-2005, then improved, while Zhouzhi became progressively more disconnected and Uch Sharif became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Bacabal and Zhouzhi have been growing further apart in their street-network character since 1975.