SR 99 tunnel


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Damage to Big Bertha worse than previously thought
Board rules WSDOT should have given contractor more warning about pipe struck by Big Bertha before stall
Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million
Excavation stopped on Big Bertha repair pit due to major ground sinkage in area
Repairs to Big Bertha will include 86 tons of steel reinforcement to tunnel-boring machine's bearing, cutter drive
Big Bertha, world's largest tunnel-boring machine, arrives in Seattle