Near-Universal 1920–1955 Housing Stock
Bexley was incorporated in 1908 and developed most heavily between 1920 and 1955, with a significant North Bexley cluster dating to the 1910s–20s. This creates a near-uniform inventory of vitrified clay tile and cast iron laterals now 70 to 105 years old — well beyond their intended service life. Root intrusion from Bexley's celebrated mature tree canopy, bellied sections from soil shrink-swell cycles, and joint separation from a century of freeze-thaw are the dominant failure modes.
Bexley's soil is silt loam over glacial till — identical to Westerville — and seasonal shrink-swell stresses rigid pipe joints. The municipal sanitary main is largely 1920s–30s vintage brick and clay; the city has been conducting rolling main-line rehabilitation, but private laterals from the cleanout to the main tap remain the homeowner's responsibility. Bexley lots are typically narrow and deep with brick driveways, flagstone walks, and ornate landscaping — making open-trench replacement extraordinarily destructive and expensive. Trenchless is not a premium upgrade here; it is the sensible default.