Lansing in context: Street-network sprawl trends

Lansing in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
LansingMichigan (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lansing plotted against Michigan and United States. The SNDi of new construction in Lansing rose steadily, compared to Michigan which rose steadily and United States which peaked in 1991-2005. Most recently, Lansing's incremental SNDi rose from 2.51 to 2.65 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lansing ranked 2nd out of 7 cities in Michigan and 29th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
2.65
Rank in United States
25th of 333
Rank in Michigan
1st of 7

Entire Network (Aggregate)

SNDi value
1.9
Rank in United States
29th of 333
Rank in Michigan
2nd of 7

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
LansingAl-QobabatChaling

In new street additions, Lansing built increasingly disconnected streets over time, while Al-Qobabat fluctuated in its street-construction patterns and Chaling built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Lansing became progressively more disconnected, while Al-Qobabat fluctuated in connectivity and Chaling grew more disconnected from 1975 through 1991-2005, then improved. Lansing and Al-Qobabat have been converging in their street-network character since 1975.