A new report is highlighting a series of mistakes that may have led to the botched re-paving project along Interstate 40 in the Triangle.
In a 67-page report from the Department of Transportation, officials tracked mistakes that were made during the original 44 million-dollar project to widen I-40. That project used a paving method called bonded concrete overlay, which is rarely used in North Carolina.
The repairs should have lasted 30 years but the pavement is already crumbling. According to the report, the department didn't train its engineers in the paving method until October 2003 -- five months after the project began.
The report also says engineers made mistakes when drafting paving instructions.
Now repairs costing more than 18 million dollars are needed along a ten-mile stretch of I-40 between Chapel Hill and Research Triangle Park.
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