THE ACT Government is advising road users that after the morning peak period tomorrow, (Tuesday November 24) the speed limit for westbound traffic inside the Acton tunnel will be lifted from 60 to 90 kilometres per hour (km/h).
A speed restriction of 60 km/h was put in place last month after a truck carrying an excavator damaged more than 60 metres at the Acton tunnel ceiling. The speed restriction was imposed due to potential risk of instability of remaining ceiling panels from updraft from traffic.
Assessments of the ceiling tiles have been undertaken and no evidence has been found of instability. Based on the assessments, the speed restriction will be lifted to the usual 90km/h.
Roads ACT will continue to monitor the affected area at the Acton tunnel.
There is an ongoing investigation to explore different options for repair works to the damaged tunnel ceiling. It is anticipated that by the end of December 2015 a plan will be identified as to what works will be needed.