The westbound lanes of Parkes Way at Acton tunnel will remain closed for this evening's peak period.

As works continue to prepare the tunnel for opening, motorists are advised to plan their journey home from the city by leaving early and taking an

The truck has been freed from the roof and has been repositioned within the Acton tunnel. The truck and excavator will now be decontaminated.

Traffic monitoring indicates there was a reduction of vehicles using Parkes Way towards the Acton tunnel this morning, with motorists choosing to

Work continued overnight to address damage in the Acton tunnel following yesterday's incident.

WorkSafe ACT has confirmed there are no asbestos fibres in the air following air monitoring at the Acton tunnel area.

ACT Policing is now on the scene at Parkes Way investigating the collision.