Putuo District in context: Street-network sprawl trends

Putuo District in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
Putuo DistrictZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Putuo District plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Putuo District's incremental SNDi rose from 3.56 to 5.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Putuo District ranked 102nd out of 116 cities in Zhejiang and 1688th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.38
Rank in China
1691st of 1843
Rank in Zhejiang
110th of 116

Entire Network (Aggregate)

SNDi value
4.7
Rank in China
1688th of 1843
Rank in Zhejiang
102nd of 116

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
Putuo DistrictDezfulEket

While Dezful and Eket both built increasingly disconnected streets over time, Putuo District fluctuated in its street-construction patterns in new street additions. Looking at the full network, Dezful and Eket both became progressively more disconnected, while Putuo District fluctuated in connectivity. Putuo District and Eket have been converging in their street-network character since 1975.