Seismic Code Upgrades Drive Isolation Bearing Retrofits
Updated seismic design standards in Japan, the western United States, and increasingly India and Turkey are requiring critical highway and rail bridge crossings to meet higher lateral displacement tolerances than codes in force when the structures were originally built. Transportation agencies are prioritizing lead-rubber and friction pendulum isolation bearings for river crossings and interchange structures identified as critical lifeline infrastructure in regional seismic hazard mapping. Retrofit programs typically bundle bearing replacement with expansion joint and deck repair work to minimize repeated lane closures, extending typical project timelines but concentrating supplier revenue into fewer, larger contracts across a given inspection cycle.
Market Impact: Adds 4,100 bridge replacements annu








