Almada in context: Street-network sprawl trends

Almada in context

2.83.23.64<19751976–19901991–20052006–2020SNDi of street additions
2.83.23.64<19751976–19901991–20052006–2020SNDi of entire street network
AlmadaSetubal (Region)Portugal (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Almada plotted against Setúbal and Portugal. The SNDi of new construction in Almada was at its lowest in 1976-1990, compared to Setúbal which rose steadily and Portugal which rose steadily. Most recently, Almada's incremental SNDi rose from 3.06 to 3.31 between 1991-2005 and 2006-2020. In terms of the aggregate network, Almada ranked 2nd out of 4 cities in Setúbal and 4th out of 9 in Portugal as of 2020.

New Street Additions (2006–2020)

SNDi value
3.31
Rank in Portugal
4th of 9
Rank in Setúbal
4th of 4

Entire Network (Aggregate)

SNDi value
2.91
Rank in Portugal
4th of 9
Rank in Setúbal
2nd of 4

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
AlmadaQuihaBaranavichy

While Quiha and Baranavichy both built increasingly disconnected streets over time, Almada built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Quiha and Baranavichy both became progressively more disconnected, while Almada became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Almada had a more sprawly network than Quiha in 1975 but the two have since reversed their relative ranking.