Update - Tunnel collapse

Engineers are on site assessing the structural integrity of the bridge.

An asbestos risk is being managed. It appears bonded asbestos is in the tiles that are on the facade of the structure.

Roads ACT are providing assistance along with ACT Policing.

A 1km exclusion zone has been established down wind.

It is unknown how long Parkes Way, both lanes, will be closed for.

A forward command post has been established near Commonwealth Avenue.