LA's Aging Pipes: A 157-Year Replacement Cycle
A 100-year pipe lifespan meets a 157-year replacement cycle — the 57-year gap that keeps Sunset Boulevard collapsing.
1926
Pipe lifespan (100 yr)
Replacement cycle (157 yr)
The Gap (57 yr)
Based on
Aakash Gupta's analysis of LADWP replacement data. 550 miles of trunk line at 3.5 miles/year = 157-year cycle.