Ratnapura in context: Street-network sprawl trends

Ratnapura in context

45678<19751976–19901991–20052006–2020SNDi of street additions
45678<19751976–19901991–20052006–2020SNDi of entire street network
RatnapuraSri Lanka (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ratnapura plotted against Sri Lanka. Both Ratnapura and Sri Lanka follow the same trend. Most recently, Ratnapura's incremental SNDi rose from 6.29 to 8.33 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ratnapura ranked 19th out of 21 in Sri Lanka as of 2020.

New Street Additions (2006–2020)

SNDi value
8.33
Rank in Sri Lanka
19th of 21

Entire Network (Aggregate)

SNDi value
6.95
Rank in Sri Lanka
19th of 21

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
RatnapuraAl MayadinShapar - Veraval

In new street additions, Ratnapura and Al Mayadin both built increasingly disconnected streets over time, while Shapar - Veraval fluctuated in its street-construction patterns. For the full network, Ratnapura and Al Mayadin both became progressively more disconnected, while Shapar - Veraval fluctuated in connectivity. Ratnapura and Al Mayadin have been growing further apart in their street-network character since 1975.