Boisar 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 Boisar plotted against Maharashtra and India. The SNDi of new construction in Boisar rose steadily, compared to Maharashtra which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Boisar's incremental SNDi rose from 4.31 to 6.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Boisar ranked 133rd out of 157 cities in Maharashtra and 1203rd out of 1868 in India as of 2020.

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

What about similarly populated cities?

• Rạch Giá, Vietnam
• Gongyi, China
• Fu'an, China
• RICCO Industrial Area, India
• Panzhihua, China
• Bhimavaram, India

In new street additions, Boisar and Rạch Giá both built increasingly disconnected streets over time, while RICCO Industrial Area built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Boisar and Rạch Giá both became progressively more disconnected, while RICCO Industrial Area fluctuated in connectivity. Notably, Boisar had a more connected network than RICCO Industrial Area in 1975 but the two have since reversed their relative ranking.