UPDATE 4:26PM Friday:
POLICE have confirmed all patients transported to Lismore Base Hospital as a result of yesterday's car crash near the intersection of Ballina Rd and the Bruxner Hwy at Alstonville are in stable condition.
Emergency services arrived on scene and began working to extricate a trapped female driver at 4.31pm.
By 5.07pm, the woman was safely out of the vehicle.
Seven people, including four children, were involved in the crash.
EMERGENCY services are still working to extricate the female patient trapped after a two car crash near the intersection of Ballina Rd and the Bruxner Hwy at Alstonville.
NSW Ambulance media has confirmed all four children are safely out of the vehicles.
A spokesperson said one child suffered a head injury, another received back injuries and the other two children were treated for various ailments.
Two of the patients involved in the crash have been transported by road ambulance to Lismore Base Hospital for further treatment.
NSW Police media said both lanes of the Bruxner Hwy at Alstonville were originally obstructed as a result of the crash and diversion have been put in place.
A number of police cars from the Richmond Local Area Command, as well as Northern Region traffic police, officers from the Traffic Management Centre, SES crews, NSW Fire and Rescue and ambulance/paramedics are on scene.
Both cars involved in the crash will require towing, the spokesperson said.
Live Traffic NSW is reporting the westbound lane of the Bruxner Hwy at Alstonville is closed and traffic is being diverted on Ballina Rd, as a result of the crash.
They're advising drivers to allow extra travel time and expect delays.
INITIAL: A WOMAN is trapped after a two vehicle crash involving four children on Ballina Rd at Alstonville.
Emergency services are currently on scene and working to extricate the woman.
A NSW Ambulance spokesperson said the four children involved in the crash are out of the vehicles.
He said they received the call shortly after 4pm today.