Bagan Siapi-api in context: Street-network sprawl trends

Bagan Siapi-api in context

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
Bagan Siapi-apiRiau (Region)Indonesia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bagan Siapi-api plotted against Riau and Indonesia. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Bagan Siapi-api's incremental SNDi rose from 4.2 to 6.91 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bagan Siapi-api ranked 9th out of 15 cities in Riau and 171st out of 366 in Indonesia as of 2020.

New Street Additions (2006–2020)

SNDi value
6.91
Rank in Indonesia
314th of 366
Rank in Riau
14th of 15

Entire Network (Aggregate)

SNDi value
4.12
Rank in Indonesia
171st of 366
Rank in Riau
9th of 15

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
Bagan Siapi-apiIkoleArjawinangun

In new street additions, Bagan Siapi-api and Arjawinangun both built increasingly disconnected streets over time, while Ikole fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Notably, Bagan Siapi-api had a more connected network than Arjawinangun in 1975 but the two have since reversed their relative ranking.