Sehwan in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sehwan plotted against Sindh and Pakistan. The SNDi of new construction in Sehwan was at its lowest in 1976-1990, compared to Sindh which followed a zig-zag trend with an overall increase and Pakistan which followed a zig-zag trend with an overall increase. Most recently, Sehwan's incremental SNDi rose from 2.66 to 4.3 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sehwan ranked 22nd out of 50 cities in Sindh and 78th out of 292 in Pakistan as of 2020.

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

What about similarly populated cities?

• Hasanpur, India
• New Bedford, United States
• Meishan, China
• Ahmadpur, India
• 长安大学城, China
• Wonogiri, Indonesia

Sehwan, Hasanpur, and Ahmadpur all built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street construction. For the full network, Sehwan and Hasanpur both became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Ahmadpur became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Sehwan and Ahmadpur have been converging in their street-network character since 1975.