Yoshkar-Ola in context: Street-network sprawl trends

Yoshkar-Ola in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Yoshkar-OlaMariy-El (Region)Russia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yoshkar-Ola plotted against Mariy-El and Russia. The SNDi of new construction in Yoshkar-Ola peaked in 1991-2005, compared to Mariy-El which rose steadily and Russia which rose steadily. Most recently, Yoshkar-Ola's incremental SNDi fell from 2.33 to 1.91 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yoshkar-Ola ranked 1st out of 1 cities in Mariy-El and 26th out of 252 in Russia as of 2020.

New Street Additions (2006–2020)

SNDi value
1.91
Rank in Russia
15th of 252
Rank in Mariy-El
1st of 1

Entire Network (Aggregate)

SNDi value
1.69
Rank in Russia
26th of 252
Rank in Mariy-El
1st of 1

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
Yoshkar-OlaMinya Al-QamhBahia Blanca

In new street additions, Yoshkar-Ola built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Minya Al-Qamh built increasingly disconnected streets over time and Bahía Blanca built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Yoshkar-Ola and Bahía Blanca have been growing further apart in their street-network character since 1975.