A stretch of Milt Stegall Drive north of Ellice Avenue is closed to traffic while police investigate a collision involving a pedestrian.
Police confirmed eastbound traffic on Ellice was also being rerouted.
It happened at about 10:30 a.m. Wednesday.
Police said one vehicle was involved, and a male pedestrian was taken to hospital in critical condition. He has since been upgraded to stable condition.
Officers were still on scene as of 2 p.m. Wednesday.