The collision has been cleared and Smith Street has been reopened.

A serious collision involving a pedestrian and a vehicle shut down a busy downtown street.

Emergency crews were called to the area at 6:30 this morning and took a pedestrian to hospital.

Northbound Smith Street was closed at Broadway while police investigated the scene.

It was expected to remain closed for the rest of the morning commute, but has since reopened.

Traffic around the downtown has been heavily affected by the closure during the morning rush hour as people find alternate routes.

It's recommended to give plenty of extra time if going in the area this morning.