State

June 7, 2014 9:00 PM

Troubled welds on the Bay Bridge: How a Chinese builder’s flaws left structural doubts and cost taxpayers

Caltrans’ decision to hire an inexperienced Chinese company, unaccustomed to the rigor of American construction rules, to fabricate the suspension span’s signature tower and roadway partly explains why costs ballooned to $6.5 billion and misgivings about the quality of the bridge persist. Caltrans continued to bet on ZPMC by relaxing U.S. standards when the company couldn’t finish the job fast enough.

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