A light pole has fallen across the road in Tuggeranong, on the corner of Athllon and Sulwood Drive.
Southbound traffic is being affected and drivers should avoid the area if possible.
Police received a call for a assistance about 8am and were at the scene conducting traffic control.
An ACT Policing spokesman said it was unclear why the pole fell.
This site is now clear.
It follows major storm damage at the weekend, following a storm on Saturday night that prompted more than 600 calls to the SES for help.