Songea in context: Street-network sprawl trends
Songea in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Songea plotted against Ruvuma and Tanzania. The SNDi of new construction in Songea rose steadily, compared to Ruvuma which rose steadily and Tanzania which was at its lowest in 1976-1990. Most recently, Songea's incremental SNDi rose from 2.77 to 3.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Songea ranked 1st out of 2 cities in Ruvuma and 28th out of 45 in Tanzania as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.61
- Rank in Tanzania
- 35th of 45
- Rank in Ruvuma
- 1st of 2
Entire Network (Aggregate)
- SNDi value
- 2.58
- Rank in Tanzania
- 28th of 45
- Rank in Ruvuma
- 1st of 2
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Songea built increasingly disconnected streets over time, while Goalpara built increasingly disconnected streets from 1975 through 1991-2005, then improved and Huairen fluctuated in its street-construction patterns. For the full network, Songea became progressively more disconnected, while Goalpara grew more disconnected from 1975 through 1991-2005, then improved and Huairen grew more disconnected from 1975 through 1976-1990, then improved. Songea and Huairen have been converging in their street-network character since 1975.