New Castle in context: Street-network sprawl trends

New Castle in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
New CastleDelaware (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with New Castle plotted against Delaware and United States. The SNDi of new construction in New Castle peaked in 1976-1990, compared to Delaware which peaked in 1991-2005 and United States which peaked in 1991-2005. Most recently, New Castle's incremental SNDi fell from 7.1 to 6.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, New Castle ranked 2nd out of 2 cities in Delaware and 327th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
6.64
Rank in United States
316th of 333
Rank in Delaware
2nd of 2

Entire Network (Aggregate)

SNDi value
6.34
Rank in United States
327th of 333
Rank in Delaware
2nd of 2

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
New CastleTomaszow MazowieckiSonatala

While Tomaszów Mazowiecki and Sonatala both built increasingly disconnected streets from 1975 through 1991-2005, then improved, New Castle built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. For the full network, New Castle and Tomaszów Mazowiecki both became progressively more disconnected, while Sonatala grew more disconnected from 1975 through 1991-2005, then improved. New Castle and Sonatala have been growing further apart in their street-network character since 1975.