Antsiramandroso in context: Street-network sprawl trends

Antsiramandroso in context

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
AntsiramandrosoToamasina (Region)Madagascar (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Antsiramandroso plotted against Toamasina and Madagascar. The SNDi of new construction in Antsiramandroso followed a zig-zag trend with an overall decrease, compared to Toamasina which rose steadily and Madagascar which rose steadily. Most recently, Antsiramandroso's incremental SNDi rose from 6.24 to 6.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Antsiramandroso ranked 2nd out of 3 cities in Toamasina and 19th out of 21 in Madagascar as of 2020.

New Street Additions (2006–2020)

SNDi value
6.38
Rank in Madagascar
15th of 21
Rank in Toamasina
2nd of 3

Entire Network (Aggregate)

SNDi value
7.06
Rank in Madagascar
19th of 21
Rank in Toamasina
2nd of 3

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
AntsiramandrosoToba Tek SinghAbnub

While Toba Tek Singh and Abnub both built increasingly disconnected streets over time, Antsiramandroso fluctuated in its street-construction patterns in new street additions. Looking at the full network, Toba Tek Singh and Abnub both became progressively more disconnected, while Antsiramandroso grew more disconnected from 1975 through 1976-1990, then improved. Antsiramandroso and Toba Tek Singh have been converging in their street-network character since 1975.