Savannah in context: Street-network sprawl trends

Savannah in context

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
SavannahGeorgia (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Savannah plotted against Georgia and United States. The SNDi of new construction in Savannah followed a zig-zag trend with an overall increase, compared to Georgia which rose steadily and United States which peaked in 1991-2005. Most recently, Savannah's incremental SNDi rose from 3.36 to 3.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Savannah ranked 1st out of 8 cities in Georgia and 58th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
3.86
Rank in United States
126th of 333
Rank in Georgia
1st of 8

Entire Network (Aggregate)

SNDi value
2.18
Rank in United States
58th of 333
Rank in Georgia
1st of 8

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
SavannahIdlibJaldhaka

In new street additions, Savannah and Idlib both fluctuated in its street-construction patterns, while Jaldhaka built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Savannah and Idlib both became progressively more disconnected, while Jaldhaka grew more disconnected from 1975 through 1991-2005, then improved. Savannah and Idlib have been growing further apart in their street-network character since 1975.