Nouadhibou in context: Street-network sprawl trends

Nouadhibou in context

0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
NouadhibouDakhlet Nouadhibou (Region)Mauritania (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nouadhibou plotted against Dakhlet Nouadhibou and Mauritania. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Nouadhibou's incremental SNDi rose from 1.09 to 1.36 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nouadhibou ranked 1st out of 1 cities in Dakhlet Nouadhibou and 2nd out of 6 in Mauritania as of 2020.

New Street Additions (2006–2020)

SNDi value
1.36
Rank in Mauritania
2nd of 6
Rank in Dakhlet Nouadhibou
1st of 1

Entire Network (Aggregate)

SNDi value
1.27
Rank in Mauritania
2nd of 6
Rank in Dakhlet Nouadhibou
1st of 1

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

What about similarly populated cities?

0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
NouadhibouPatos de MinasYiliang

In new street additions, Nouadhibou fluctuated in its street-construction patterns, while Patos de Minas built increasingly disconnected streets over time and Yiliang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Nouadhibou fluctuated in connectivity, while Patos de Minas became progressively more disconnected and Yiliang grew more disconnected from 1975 through 1976-1990, then improved. Notably, Nouadhibou had a more sprawly network than Patos de Minas in 1975 but the two have since reversed their relative ranking.