Goroka in context: Street-network sprawl trends

Goroka in context

6789<19751976–19901991–20052006–2020SNDi of street additions
6789<19751976–19901991–20052006–2020SNDi of entire street network
GorokaEastern Highlands (Region)Papua New Guinea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Goroka plotted against Eastern Highlands and Papua New Guinea. While Eastern Highlands and Papua New Guinea both rose steadily, Goroka's new street additions rose steadily. Most recently, Goroka's incremental SNDi rose from 8.17 to 9.48 between 1991-2005 and 2006-2020. In terms of the aggregate network, Goroka ranked 1st out of 1 cities in Eastern Highlands and 9th out of 10 in Papua New Guinea as of 2020.

New Street Additions (2006–2020)

SNDi value
9.48
Rank in Papua New Guinea
8th of 10
Rank in Eastern Highlands
1st of 1

Entire Network (Aggregate)

SNDi value
6.58
Rank in Papua New Guinea
9th of 10
Rank in Eastern Highlands
1st of 1

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

What about similarly populated cities?

46810<19751976–19901991–20052006–2020SNDi of street additions
46810<19751976–19901991–20052006–2020SNDi of entire street network
GorokaMansaAssin Fosu

In new street additions, Goroka built increasingly disconnected streets over time, while Mansa built increasingly disconnected streets from 1975 through 1976-1990, then improved and Assin Fosu fluctuated in its street-construction patterns. For the full network, Goroka became progressively more disconnected, while Mansa grew more disconnected from 1975 through 1991-2005, then improved and Assin Fosu fluctuated in connectivity.