Trends
4.02
SNDi (2020)730 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Northampton
▸ Hover over bars to see values
The chart above shows, for each construction period in Northampton, the SNDi of new street additions (bar height) and the volume added (bar width), so that bar area reflects the total disconnectedness burden of that period's construction. The 1975 period contributed the greatest disconnectedness burden, with 490 km of street added at an SNDi of 3.73. Overall, the SNDi of new street additions peaked in 1991-2005.
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Northampton as of 2020, the overall level of street-network sprawl is 4.02, which is sprawly.
Trends in street network construction
The SNDis of street construction for the respective time periods are 3.73, 4.73, 4.99 and 3.84. Street construction in Northampton increased in disconnectivity initially but has since improved. The streets constructed in 1991-2005 were the most disconnected.
Quantity of street network construction
The street network in Northampton spans a total of 730 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 3.73, which is relatively sprawly.
Effect on the aggregate network
New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 3.73, 3.89, 4.04 and 4.02. The aggregate street network in Northampton increased in disconnectivity initially,but the trend has turned around after 2000.