Vicenza in context: Street-network sprawl trends

Vicenza in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
VicenzaVeneto (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Vicenza plotted against Veneto and Italy. The SNDi of new construction in Vicenza peaked in 1976-1990, compared to Veneto which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Vicenza's incremental SNDi fell from 3.76 to 3.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vicenza ranked 4th out of 7 cities in Veneto and 60th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.4
Rank in Italy
42nd of 88
Rank in Veneto
2nd of 7

Entire Network (Aggregate)

SNDi value
3.18
Rank in Italy
60th of 88
Rank in Veneto
4th of 7

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

What about similarly populated cities?

1.82.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
VicenzaOkposiTwante

In new street additions, Vicenza built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Okposi built increasingly disconnected streets over time and Twante fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Notably, Vicenza had a more sprawly network than Twante in 1975 but the two have since reversed their relative ranking.