Mellon said that the department is evaluating possible fixes to some of Kiewitt's work, but it would be done within the $500 million contract. Three of the 234 concrete slabs have surface imperfections that may require fixes later this year. The concrete did not cure properly, because an outage at the concrete plant caused delays that let hot winds dry the concrete too quickly, the department said.

Source: Los Angeles Times January 27, 2018 01:18 UTC