both the time and budget. Work moved to concreting the interior of the tunnel. Concrete for the tunnel was supplied from a temporary concrete mixing plant established by Certified Concrete on a rail siding from the tunnel portal. A minimum of four agitator trucks conveyed concrete from the plant to the tunnel. Over 45,000 cubic yards (34,405 cubic metres) of concrete were placed within the tunnel with a further 4,500 cubic yards (3,440 cubic metres) placed outside. After the tunnel's concrete walls had been sandblasted they were lined with 306,000 sq ft of tiles imported from overseas using a newly invented epoxy glue made by Fletcher industries using technology sourced from the Australian company of A C Horn. Ventilation buildings were constructed at both ends of the tunnel in each of which were located one fresh-air and one exhaust fan, both in diameter. The final price awarded to Fletchers and Kaiser including all variations was £2,112,542, 8.5% above the original contract award though it took four years before the Road Tunnel Authority paid it all. By the time the purchase of property, construction of the Lyttelton Tunnel Control Building, the consultant's fee of the Ministry of Works and loan interest during construction were included the total cost (excluding the motorway) was £2.7 million. Opening On the first night that cars were allowed through the queue stretched from the tunnel, down Ferry Rd and into Barbadoes Street as far back as the Cathedral of the Blessed Sacrament in Christchurch. When the tunnel officially opened on 27 February 1964 by Governor-General Sir Bernard Fergusson it was hailed by the local community as "the new gateway for the Port to the Plains" and a significant development in the history of the region. A 20-cent toll levied to use the tunnel was abolished by the Christchurch-Lyttelton Road Tunnel Authority Dissolution Act 1978, which became effective on 1 April 1979. Service history The original Lyttelton Road Tunnel Administration Building, designed by Christchurch architect Peter Beaven, was a Category I listed heritage building and one of the youngest buildings recognised by the trust. Following its demolition as a result of damage sustained in the February 2011 Christchurch earthquake, a new control building, constructed to 180% of the Building Code to withstand future earthquakes, was completed in 2014 at a cost of $1.5 million. , the tunnel has an AADT (average daily traffic volume) of 10,755 vehicles/day,