Faulty concrete laid in the southbound lanes of the Sydney Harbour tunnel was to blame for peak-hour madness last Thursday morning, ninemsn reports.
According to the Roads and Maritime Services (RMS), the lanes had been closed for resurfacing on Wednesday night, due to reopen at 5 am on Thursday morning.
However, workers discovered that the concrete was still wet when they went to sweep the area shortly before 5 am. Lengthy rush-hour traffic jams were the inevitable result.
The southbound lanes were finally reopened at 7 am after a steel plate was installed to cover the affected area.
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