Corby 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 Corby plotted against England and United Kingdom. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Corby's incremental SNDi fell from 5.71 to 5.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Corby ranked 123rd out of 124 cities in England and 139th out of 143 in United Kingdom as of 2020.

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

What about similarly populated cities?

• Birote, Pakistan
• Vigevano, Italy
• Wutai, China
• Nyangezi, Democratic Republic of the Congo
• Nalagarh, India
• San Luis, México

While Birote and Nyangezi both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, Corby built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full network, Corby became progressively more disconnected, while Birote became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Nyangezi became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Corby and Nyangezi have been converging in their street-network character since 1975.