Sirte in context: Street-network sprawl trends

Sirte in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
SirteSurt (Region)Libya (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sirte plotted against Surt and Libya. The SNDi of new construction in Sirte rose steadily, compared to Surt which peaked in 1991-2005 and Libya which peaked in 1976-1990. Most recently, Sirte's incremental SNDi rose from 2.98 to 3.27 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sirte ranked 1st out of 1 cities in Surt and 3rd out of 13 in Libya as of 2020.

New Street Additions (2006–2020)

SNDi value
3.27
Rank in Libya
8th of 13
Rank in Surt
1st of 1

Entire Network (Aggregate)

SNDi value
2.1
Rank in Libya
3rd of 13
Rank in Surt
1st of 1

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
SirteKyelaTindji

In new street additions, Sirte built increasingly disconnected streets over time, while Kyela built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Tindji built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Sirte and Tindji both became progressively more disconnected, while Kyela became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Sirte and Tindji have been growing further apart in their street-network character since 1975.