New Haven in context: Street-network sprawl trends
New Haven in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with New Haven plotted against Connecticut and United States. While Connecticut and United States both peaked in 1991-2005, New Haven's new street additions peaked in 1991-2005. Most recently, New Haven's incremental SNDi fell from 3.64 to 2.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, New Haven ranked 1st out of 7 cities in Connecticut and 21st out of 333 in United States as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.47
- Rank in United States
- 13th of 333
- Rank in Connecticut
- 4th of 7
Entire Network (Aggregate)
- SNDi value
- 1.85
- Rank in United States
- 21st of 333
- Rank in Connecticut
- 1st 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, New Haven built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Xichuan built increasingly disconnected streets from 1975 through 1976-1990, then improved and Lingcheng fluctuated in its street-construction patterns. For the full network, New Haven and Lingcheng both became progressively more disconnected, while Xichuan grew more disconnected from 1975 through 1991-2005, then improved. New Haven and Xichuan have been growing further apart in their street-network character since 1975.