Bandaragama in context: Street-network sprawl trends

Bandaragama in context

345678<19751976–19901991–20052006–2020SNDi of street additions
345678<19751976–19901991–20052006–2020SNDi of entire street network
BandaragamaKalutara (Region)Sri Lanka (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bandaragama plotted against Kalutara and Sri Lanka. While Kalutara and Sri Lanka both rose steadily, Bandaragama's new street additions rose steadily. Most recently, Bandaragama's incremental SNDi rose from 4.62 to 6.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bandaragama ranked 1st out of 1 cities in Kalutara and 15th out of 21 in Sri Lanka as of 2020.

New Street Additions (2006–2020)

SNDi value
6.62
Rank in Sri Lanka
13th of 21
Rank in Kalutara
1st of 1

Entire Network (Aggregate)

SNDi value
5.6
Rank in Sri Lanka
15th of 21
Rank in Kalutara
1st of 1

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
BandaragamaYongningEl Tocuyo

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