Bolingbrook in context: Street-network sprawl trends

Bolingbrook 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
BolingbrookIllinois (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bolingbrook plotted against Illinois and United States. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Bolingbrook's incremental SNDi fell from 4.4 to 3.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bolingbrook ranked 12th out of 12 cities in Illinois and 230th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
3.5
Rank in United States
84th of 333
Rank in Illinois
3rd of 12

Entire Network (Aggregate)

SNDi value
3.73
Rank in United States
230th of 333
Rank in Illinois
12th of 12

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
BolingbrookSafadashtHakodate

In new street additions, Bolingbrook built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Safadasht built increasingly connected streets over time and Hakodate built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Bolingbrook grew more disconnected from 1975 through 1991-2005, then improved, while Safadasht became progressively more connected and Hakodate became progressively more disconnected. Notably, Bolingbrook had a more connected network than Safadasht in 1975 but the two have since reversed their relative ranking.