Chattogram in context: Street-network sprawl trends

Chattogram in context

46810<19751976–19901991–20052006–2020SNDi of street additions
46810<19751976–19901991–20052006–2020SNDi of entire street network
ChattogramChittagong (Region)Bangladesh (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chattogram plotted against Chittagong and Bangladesh. The SNDi of new construction in Chattogram rose steadily, compared to Chittagong which rose steadily and Bangladesh which followed a zig-zag trend with an overall increase. Most recently, Chattogram's incremental SNDi rose from 7.62 to 8.55 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chattogram ranked 14th out of 44 cities in Chittagong and 102nd out of 234 in Bangladesh as of 2020.

New Street Additions (2006–2020)

SNDi value
8.55
Rank in Bangladesh
124th of 234
Rank in Chittagong
16th of 44

Entire Network (Aggregate)

SNDi value
5.78
Rank in Bangladesh
102nd of 234
Rank in Chittagong
14th of 44

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
ChattogramLucknowSan Francisco

In new street additions, Chattogram built increasingly disconnected streets over time, while Lucknow fluctuated in its street-construction patterns and San Francisco built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Chattogram and Lucknow have been growing further apart in their street-network character since 1975.