Mianyang in context: Street-network sprawl trends

Mianyang in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
MianyangSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mianyang plotted against Sichuan and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Mianyang's incremental SNDi rose from 3.39 to 4.24 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mianyang ranked 61st out of 98 cities in Sichuan and 1296th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.24
Rank in China
1473rd of 1843
Rank in Sichuan
72nd of 98

Entire Network (Aggregate)

SNDi value
3.38
Rank in China
1296th of 1843
Rank in Sichuan
61st of 98

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
MianyangNewcastle upon TyneCagayan de Oro

While Newcastle upon Tyne and Cagayan de Oro both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Mianyang fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Mianyang and Newcastle upon Tyne have been converging in their street-network character since 1975.