Brownsville in context: Street-network sprawl trends

Brownsville 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
BrownsvilleTexas (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Brownsville plotted against Texas and United States. While Texas and United States both peaked in 1991-2005, Brownsville's new street additions peaked in 1991-2005. Most recently, Brownsville's incremental SNDi fell from 4.37 to 4.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Brownsville ranked 26th out of 42 cities in Texas and 167th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.15
Rank in United States
173rd of 333
Rank in Texas
32nd of 42

Entire Network (Aggregate)

SNDi value
3.22
Rank in United States
167th of 333
Rank in Texas
26th of 42

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

What about similarly populated cities?

2.43.24<19751976–19901991–20052006–2020SNDi of street additions
2.43.24<19751976–19901991–20052006–2020SNDi of entire street network
BrownsvilleNajafabadLuena

In new street additions, Brownsville built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Najafabad built increasingly disconnected streets over time and Luena fluctuated in its street-construction patterns. For the full network, Brownsville and Najafabad both became progressively more disconnected, while Luena grew more disconnected from 1975 through 1976-1990, then improved. Brownsville and Najafabad have been growing further apart in their street-network character since 1975.