The level of street-network sprawl in new development in Songwe peaked in 1991-2005. To get a sense of how street development has changed in Songwe, we can consider two of its most populous cities: Tunduma and Vwawa. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Tunduma rose steadily. The level of street-network sprawl in new development in Vwawa rose steadily.

How do development practices in Songwe fare in comparison to others in Tanzania? Most recently in 2006-2020, street construction in Songwe was the 15th-most disconnected out of the 25 regions in Tanzania. Its position in the ranks since 1975 has fallen; relative to other regions in Tanzania, street construction in Songwe has become more connected. Songwe ranked 13th in 1975, 17th in 1976-1990, 21st in 1991-2005 and 15th in 2006-2020.

As of 2020, the city with the most disconnected street network in Songwe is Vwawa with an SNDi of 3.48, which is relatively sprawly. Conversely, the most connected city is Tunduma with an SNDi of 1.73, which is very well-connected. See trends for these cities: Tunduma, Vwawa

The level of street-network sprawl in the aggregate network in Songwe rose steadily. To get a sense of how the aggregate street network has changed in Songwe, we can consider two of its most populous cities: Tunduma and Vwawa. Disconnectivity in the most populous cities in Songwe follow the same region trend.

To date, Songwe is the 16th-most disconnected out of the 25 regions in Tanzania. Its position in the ranks since 1975 has fallen; relative to other regions in Tanzania, the street network in Songwe has become more connected. Songwe ranked 13th in 1975, 14th in 1976-1990, 17th in 1991-2005 and 16th in 2006-2020.