Barron River bridge on its last legs with further weight restrictions to come

Local News

By staff writers

A retired engineer who worked on the construction of the Barron River bridge in 1962 said the concrete

structure had outlived its useful life which has been known by the State Government for more than four years.

The Main Roads Department attempts to repair the ailing Barron River Bridge. An engineer says it could be out of action for heavy loads for two and one half years. It would be open  as it is now but with severely reduced loads and a single lane. Labor politicians have studiously ignored a proposed 18 klm new road to Cairns which would bypass the bridge and the dangerous Kuranda Range Road. Commerce and tourism could be heavily impacted if the MRD lowers the weight limits. There is no existing, suitable alternative route between the Tablelands and Cairns

Due to potential catastrophic failure, the downgraded weight limit now at 50.5 tonnes would soon have to be lowered again because the bridge is in the final days of its life. It has been estimated the cost of a new bridge could be up $500M.

The engineer, who wished to remain anonymous said when the bridge was built 58 years ago there was no comprehension it would be carrying the large volume of heavy loads at the speed of modern trucks today.

“The life of the bridge was supposed to be 100 years but it takes one third of its life for the concrete to cure, another third for maximum carrying capacity and in the final third it starts to deteriorate,” he said.

X-rays taken in 2016 indicated each pier had a multitude of fine cracks which could be repaired by external application or drilling holes in the structure and pressure-filling them with a low viscosity, two-pack epoxy bond.

To start this treatment first each pier has to be X-rayed which takes at least six weeks then  six months to inject the epoxy into each one.

Drilling could weaken the pier structure therefore it had to be done one by one or the integrity of the entire bridge could be affected.

But the downside to this remedy is that the concrete in the pier becomes rock hard and loses flexibility which is required for heavy, moving vehicles.

It is vibrations that cause cracks so the weight and speed limits would have to be lowered significantly to reduce this movement, he explained.

“Vibrations from speeding vehicles over previous years have created the fractures in the concrete which were discovered in 2016 and the next report will probably show it is in worse condition,” he said.

In 2019 the Main Roads Department awarded multi-million dollar tenders for the repair of four concrete bridges on the Mulligan Highway between Mount Carbine and Lakeland because of similar deterioration.

These repairs took nearly 12 months to be carried out. The Barron River bridge could take two and one half years to fix.

Meanwhile a much-publicised alternative road, the Bridle Track, to Cairns from the Tablelands which bypasses the dangerous Kuranda Range Road and the Barron Bridge is being ignored by local Labor Members of Parliament, Craig Crawford and Cynthia Lui who have known about the poor state of the bridge for some time, certainly before the October state election when it was not ever mentioned.

All northern Labor politicians have studiously ignored the problem. Crawford’s thought bubble solution to the accident-prone Kuranda Range Road was to put all travelers into driverless cars and trucks.

After all Crawford and Lui represent the Labor Party, not the people.

About Editor, cairnsnews

One of the few patriots left who understands the system and how it has been totally subverted under every citizen's nose. If we can help to turn it around we will, otherwise our children will have nothing. Our investigations show there is no 'government' of the people for the people of Australia. The removal of the Crown from Australian Parliaments, followed by the incorporation of Parliaments aided by the Australia Act 1987 has left us with corporate government with policies not laws, that apply only to members of political parties and the public service. There is no law, other than the Common Law. This fact will be borne out in the near future as numerous legal challenges in place now, come to a head soon.

Posted on January 19, 2021, in ALP, Annastacia Palaszczuk, Cynthia Lui, General and tagged , , , , . Bookmark the permalink. 5 Comments.

  1. Main Roads and the political elitetards have done the maths and more people will be required to die before it’s worth paying Fred and Barney to repair or replace.

    Like

  2. Divert all heavy tableland traffic to the Gillies
    I suggest that the existing supports be encased in a steel frames and then to be encased in concrete to add more support and car traffic could continue in both ways if a 60 k speed zone were established while this is happening

    Like

  3. The Sydney Harbour Bridge has passed its life span and has masses of observable rust, so I am told. All part of the plan I presume.

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  4. This is a perfect example of persons holding positions which they are least suited to, The solution to the problem is so obvious the school children ask questions, what about the alternative road that has already been constructed.

    Like

  5. Driverless cars ? Ummm what about the passengers in said cars or did that bit go pooft in the thought bubble ?
    Good luck with “driverless” cars & trucks sharing the range road.

    Like

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