“The residents did an awesome job caring for the girl until we got there,” a chopper spokesman said.
She was admitted to hospital and this morning was reported to be in a critical condition in the intensive care unit.
It was later confirmed she was on life support.
When police arrived they cordoned off Lysnar Street between Williamson Street and Winifred Street while the teenager was treated on the roadside.
They immediately began a serious crash inquiry.
“We have completed our scene examination and spoken to witnesses,” police said this morning.
“This was an extremely traumatic and distressing incident for the girl's family and for the members of the public who were there.
“There is an 0800 number available for anyone who feels they need to talk to someone about it.”
The number is 0800-842-846.
Victim Support is supporting the girl's family.