Port-au-Prince in context: Street-network sprawl trends

Port-au-Prince in context

3.64.24.85.4<19751976–19901991–20052006–2020SNDi of street additions
3.64.24.85.4<19751976–19901991–20052006–2020SNDi of entire street network
Port-au-PrinceOuest (Region)Haiti (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Port-au-Prince plotted against Ouest and Haiti. The SNDi of new construction in Port-au-Prince peaked in 1991-2005, compared to Ouest which peaked in 1991-2005 and Haiti which rose steadily. Most recently, Port-au-Prince's incremental SNDi fell from 5.34 to 4.35 between 1991-2005 and 2006-2020. In terms of the aggregate network, Port-au-Prince ranked 5th out of 6 cities in Ouest and 12th out of 21 in Haiti as of 2020.

New Street Additions (2006–2020)

SNDi value
4.35
Rank in Haiti
3rd of 21
Rank in Ouest
1st of 6

Entire Network (Aggregate)

SNDi value
4.3
Rank in Haiti
12th of 21
Rank in Ouest
5th 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
Port-au-PrinceDetroitVancouver

In new street additions, Port-au-Prince built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Detroit built increasingly disconnected streets over time and Vancouver built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend.