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40km/h limit for Story Bridge during repairs

16 November, 2011

Lord Mayor Graham Quirk has announced speed limits on the Story Bridge will be reduced to 40km/hr for up to 12 hours a day while important repairs are made to the 70 year old bridge.

Cr Quirk said the Story Bridge required $1.2 million of repairs to its concrete approach spans on the Kangaroo Point end of the bridge that could take several months.

The speed restrictions and occasional lane closures would be infrequent and occur mainly at night. Further detail around traffic impacts will be communicated prior to traffic changes but it is expected changes will start from Monday (21 November).

“The Story Bridge is one of Brisbane’s most famous landmarks and is more than 70 years old, so some general wear and tear is expected on a structure of this age,” Cr Quirk said.

“More than 97,000 vehicles cross this iconic bridge each day and it is essential that we get in early and undertake these repairs to ensure it continues to play a major role in managing traffic around our city.

“In this case, a combination of the age of the bridge and a process called carbonation of the concrete has resulted in the corrosion of steel within the concrete.

“Similar repair works were done to this part of the bridge in 1995 and because of the traffic vibrations on this iconic bridge we are having to redo some of those repairs 16 years later.”

Cr Quirk said Council had developed a traffic management plan to control lane closures and speed restrictions for repairs under each of the six lanes.

“I ask motorists to be patient and we will look at having shorter durations of speed restrictions to reduce traffic disruption where possible but the restrictions need to be in place to ensure the repairs are effective and the bridge is maintained for the long-term.”

He said the repair works would be undertaken under the bridge, out of the view of motorists.

“Traffic control, police direction and signage will be in place to inform motorists of any disruptions and I thank motorists in advance for their patience during the works,” Cr Quirk said.

The repair works include the removal of damaged concrete and steel reinforcing and the fitting of new reinforcing bars. The lanes directly above the repair site will be closed for a couple of hours while the works are undertaken.

Workers will apply a spray-concrete repair product and clamp formwork up against the repair patch to ensure it firmly bonds to the repair surface and reinforcing steel. Speed restrictions will be maintained on the bridge for 12 hours while the repair material hardens sufficiently.

The Story Bridge repair work is one of several of projects being undertaken to preserve Brisbane’s structural icons, including the restoration of City Hall and the Walter Taylor Bridge at Indooroopilly.

FACTS ON HISTORIC BRISBANE BUILDINGS UNDERGOING REPAIRS

Story Bridge
• The Story Bridge spans Petrie Bight from Kangaroo Point to Fortitude Valley.
• It totals 1,072 metres in length, measured from the commencement of the retaining walls at the beginning of the southern approach, to the northern pier.
• Construction on the bridge began on May 24, 1935. The bridge was opened on July 6, 1940. It was handed over to Council in 1946.
• It remains the largest span metal truss bridge in Australia, with a main span of 281.7 metres.

Walter Taylor Bridge
• The Walter Taylor Bridge was opened in 1936
• Repair works to the bridge commenced in July 2007
• The project is expected to be completed by February 2012, and traffic will be completely undisrupted
• The work is being carried out to rehabilitate the bridge’s suspension cables
• The project involves the repair of cables and the construction of a 20 tonne steel Yoke to support the bridge as the cables are being repaired
• The project involves the use of more than 1430 nuts and bolts and more than 1000 litres of paint
• A speed restriction of 40km/hr is in place as the repair works are carried out

City Hall Restoration
• In November 2008, an independent report revealed serious safety issues inside the building and made several recommendations about restoring City Hall.
• The problems have built up gradually over the years, but in order to meet modern safety regulations, City Hall is now in need of urgent repair and upgrades.
• City Hall is facing $215 million worth of restoration and repair works including. These works include repairs to water problems, fire and electrical shortfalls and works to comply with changes in building practices
• The City Hall Restoration Project is progressing on-schedule, with tenants expected to re-occupy the building from late 2012.



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