UPDATE 3.15PM: Forensic Crash Unit police officers are investigating a scene that has caused traffic gridlock between the Sunshine Coast and Brisbane.
A police spokesman said both lanes of northbound traffic had been reopened since a two-vehicle crash blocked the entire highway at Elimbah at 12.10pm.
He said southbound traffic had been reopened to one lane.
The highway is not expected to fully reopen until about 4pm.
UPDATE 1.30PM: Northbound traffic is creeping past the scene of a serious crash which has otherwise put the Bruce Hwy into gridlock.
A police spokesman said one of the northbound lanes had been opened to traffic shortly after 1pm.
A Queensland Ambulance Service spokeswoman said two people had been taken to Royal Brisbane and Women's Hospital.
UPDATE 1:05PM: Firefighter crews have cut the sides off a vehicle so paramedics can help a patient at the scene of a serious Bruce Hwy crash.
A Queensland ambulance service spokeswoman said paramedics were treating two patients.
The crash has caused all lanes in both directions to be blocked.
It is just south of where the highway crosses Beerburrum Creek.
Emergency services say at least two vehicles were involved.
EARLIER: Bruce Hwy traffic has been blocked in both directions after a crash resulted in a vehicle crossing into oncoming traffic.
Emergency services were called to the scene at Elimbah, north of Caboolture, at 12.10pm.
A police spokesman said there were reports of debris being strewn across the highway.
He said it appeared two vehicles had been involved in the crash, with one of them overturning.
Paramedics are on scene tending to patients.
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