Tegbi in context: Street-network sprawl trends

Tegbi in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
TegbiVolta (Region)Ghana (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tegbi plotted against Volta and Ghana. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Tegbi's incremental SNDi rose from 3.25 to 4.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tegbi ranked 4th out of 6 cities in Volta and 36th out of 53 in Ghana as of 2020.

New Street Additions (2006–2020)

SNDi value
4.39
Rank in Ghana
20th of 53
Rank in Volta
4th of 6

Entire Network (Aggregate)

SNDi value
4.49
Rank in Ghana
36th of 53
Rank in Volta
4th of 6

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
TegbiLodiErbaa

In new street additions, Tegbi fluctuated in its street-construction patterns, while Lodi built increasingly disconnected streets over time and Erbaa built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Tegbi grew more disconnected from 1975 through 1976-1990, then improved, while Lodi became progressively more disconnected and Erbaa became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.