Aurora in context: Street-network sprawl trends

Aurora 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
AuroraIllinois (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Aurora plotted against Illinois and United States. The SNDi of new construction in Aurora peaked in 1976-1990, compared to Illinois which peaked in 1991-2005 and United States which peaked in 1991-2005. Most recently, Aurora's incremental SNDi fell from 3.93 to 3.79 between 1991-2005 and 2006-2020. In terms of the aggregate network, Aurora ranked 11th out of 12 cities in Illinois and 196th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
3.79
Rank in United States
114th of 333
Rank in Illinois
6th of 12

Entire Network (Aggregate)

SNDi value
3.46
Rank in United States
196th of 333
Rank in Illinois
11th of 12

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
AuroraLinhaiChief Albert Luthuli Park

In new street additions, Aurora and Chief Albert Luthuli Park both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Linhai fluctuated in its street-construction patterns. For the full network, Aurora became progressively more disconnected, while Linhai fluctuated in connectivity and Chief Albert Luthuli Park grew more disconnected from 1975 through 1976-1990, then improved. Aurora and Chief Albert Luthuli Park have been converging in their street-network character since 1975.