The level of street-network sprawl in new development in Delta rose steadily. To get a sense of how street development has changed in Delta, we can consider three of its most populous cities: Warri, Asaba and Sapele. Out of the three cities, Asaba and Sapele do not follow the same trend as the region. The level of street-network sprawl in new development in Asaba peaked in 1991-2005. The level of street-network sprawl in new development in Sapele followed a zig-zag trend with an overall increase.

How do development practices in Delta fare in comparison to others in Nigeria? Most recently in 2006-2020, street construction in Delta was the 23rd-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has risen; relative to other regions in Nigeria, street construction in Delta has become more disconnected. Delta ranked 31st in 1975, 29th in 1976-1990, 27th in 1991-2005 and 23rd in 2006-2020.

As of 2020, the city with the most disconnected street network in Delta is Ugborodo with an SNDi of 13.87, which is very sprawly. Conversely, the most connected city is Ozoro with an SNDi of 2.72, which is relatively well-connected. See trends for these cities: Ozoro, Ugborodo

The level of street-network sprawl in the aggregate network in Delta rose steadily. To get a sense of how the aggregate street network has changed in Delta, we can consider three of its most populous cities: Warri, Asaba and Sapele. Out of the three cities, Asaba does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Asaba peaked in 1991-2005.

To date, Delta is the 27th-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has risen; relative to other regions in Nigeria, the street network in Delta has become more disconnected. Delta ranked 31st in 1975, 29th in 1976-1990, 29th in 1991-2005 and 27th in 2006-2020.