Ancona in context: Street-network sprawl trends

Ancona in context

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
AnconaMarche (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ancona plotted against Marche and Italy. The SNDi of new construction in Ancona rose steadily, compared to Marche which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Ancona's incremental SNDi rose from 3.17 to 3.72 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ancona ranked 1st out of 2 cities in Marche and 12th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.72
Rank in Italy
51st of 88
Rank in Marche
2nd of 2

Entire Network (Aggregate)

SNDi value
2.07
Rank in Italy
12th of 88
Rank in Marche
1st of 2

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
AnconaLittle RockBilaspur

In new street additions, Ancona built increasingly disconnected streets over time, while Little Rock built increasingly disconnected streets from 1975 through 1976-1990, then improved and Bilaspur built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Ancona and Little Rock both became progressively more disconnected, while Bilaspur grew more disconnected from 1975 through 1991-2005, then improved. Ancona and Bilaspur have been growing further apart in their street-network character since 1975.