Zacatecoluca in context: Street-network sprawl trends

Zacatecoluca in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
ZacatecolucaLa Paz (Region)El Salvador (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zacatecoluca plotted against La Paz and El Salvador. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Zacatecoluca's incremental SNDi rose from 4.77 to 5.65 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zacatecoluca ranked 1st out of 1 cities in La Paz and 4th out of 12 in El Salvador as of 2020.

New Street Additions (2006–2020)

SNDi value
5.65
Rank in El Salvador
7th of 12
Rank in La Paz
1st of 1

Entire Network (Aggregate)

SNDi value
3.76
Rank in El Salvador
4th of 12
Rank in La Paz
1st of 1

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
ZacatecolucaKomaniEsfarayen

In new street additions, Zacatecoluca built increasingly disconnected streets over time, while Komani built increasingly disconnected streets from 1975 through 1976-1990, then improved and Esfarayen built increasingly connected streets over time. For the full network, Zacatecoluca and Komani both became progressively more disconnected, while Esfarayen became progressively more connected. Notably, Zacatecoluca had a more connected network than Esfarayen in 1975 but the two have since reversed their relative ranking.