320 people have been killed on the county's roads in the last decade. Picture: ARCHANT ARCHIVE (Image: Archant)
The entry slip road onto the A14 westbound from Nacton was temporarily closed tonight.
Suffolk Constabulary received a report of an oil spill on the road around 6pm.
Highways engineers cleared the spillage and the road was reopen around 9pm.
A police spokeswoman said the cause of the oil spill was not known.
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