The old Gateway Motorway has been cleared after a truck spilled "human waste" on the road early this morning.
The motorway was cleared about 12.30pm, nearly five hours after the spill occurred.
Vacuum trucks and street sweepers were involved in the clean-up on the southbound lanes of Southern Cross Way.
Two Queensland Fire and Rescue Service crews were also called to the scene and helped wash down some of the waste from a concrete barrier on the side motorway, a Department of Community Safety spokeswoman said.
Transport company Transpacific Industries said the truck, which was carrying a ‘‘key component of organic fertiliser’’, lost power steering and hit a guard rail on the southbound bridge causing it lose part of its load about 7.30am.
The truck was bound for a farm at Aratula, about 90 kilometres southwest of Brisbane.
‘‘Transpacific immediately notified the Department of Environment & Heritage Protection and the Gateway Motorway Environmental Officer of the incident,’’ the company said in a statement.