For months, shippers have been insuring against strike delays by sending their cargo to the other side of the continent.

Dockworkers at East and Gulf Coast ports are on the verge of a strike that could begin Tuesday, raising questions about whether West Coast ports can absorb stalled shipments.

Warehouses and other facilities have been expanded since pandemic-era supply chain disruptions, leaving L.A. and Long Beach ready to increase volume if East Coast port workers strike this week.