Norwalk in context: Street-network sprawl trends
Norwalk in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Norwalk plotted against Connecticut and United States. The SNDi of new construction in Norwalk rose steadily, compared to Connecticut which rose steadily and United States which peaked in 1991-2005. Most recently, Norwalk's incremental SNDi rose from 5.01 to 6.19 between 1991-2005 and 2006-2020. In terms of the aggregate network, Norwalk ranked 6th out of 7 cities in Connecticut and 188th out of 333 in United States as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 6.19
- Rank in United States
- 307th of 333
- Rank in Connecticut
- 6th of 7
Entire Network (Aggregate)
- SNDi value
- 3.43
- Rank in United States
- 188th of 333
- Rank in Connecticut
- 6th of 7
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Norwalk built increasingly disconnected streets over time, while Dongam built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Barara fluctuated in its street-construction patterns. For the full network, Norwalk and Barara both became progressively more disconnected, while Dongam became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Norwalk had a more sprawly network than Barara in 1975 but the two have since reversed their relative ranking.