In October 2019 the bridge was replaced by the two-lane concrete Merrylees Bridge.[2][3]
History
Allan trusses
Timber truss road bridges have played a significant role in the expansion and improvement of the NSW road network. Prior to the bridges being built, river crossings were often dangerous in times of rain, which caused bulk freight movement to be prohibitively expensive for most agricultural and mining produce. Only the high priced wool clip of the time was able to carry the costs and inconvenience imposed by the generally inadequate river crossings that often existed prior to the trusses construction.[1]
Timber truss bridges were preferred by the Public Works Department from the mid 19th to the early 20th century because they were relatively cheap to construct, and used mostly local materials. The financially troubled governments of the day applied pressure to the Public Works Department to produce as much road and bridge work for as little cost as possible, using local materials. This condition effectively prohibited the use of iron and steel, as these, prior to the construction of the steel works at Newcastle in the early 20th century, had to be imported from England.[1]
Allan trusses were the first truly scientifically engineered timber truss bridges, and incorporate American design ideas for the first time. This is a reflection of the changing mindset of the NSW people, who were slowly accepting that American ideas could be as good as or better than European ones. The high quality and low cost of the Allan truss design entrenched the dominance of timber truss bridges for NSW roads for the next 30 years.[1]
Percy Allan, the designer of Allan truss and other bridges, was a senior engineer of the Public Works Department, and a prominent figure in late 19th century NSW.[1]
Timber truss bridges, and timber bridges generally were so common that NSW was known to travellers as the "timber bridge state".[1]
Carrathool Bridge
Road entering the bridge
The bridge spanning the Murrumbidgee River between Carrathool and the Sturt Highway was completed in 1924. It is an Allan-type timber truss road bridge, and has a bascule-type lift span supported on cylindrical iron piers, designed to allow river-craft to pass. Only three bascule lift span bridges remain in NSW, and the Carrathool bridge is the only one of these in a timber truss road bridge. The lift section was built by Poole and Steel.[4]
The Carrathool bridge was constructed in response to public pressure for a bridge to replace the river vehicular punt Funding for work was drawn partly from the local community, and partly from the Department of Public Works. The requirement that local residents pay for half the cost of the bridge "was deplored by the then Mayor of Hay, who was a vocal advocate for the rights and the development of the Riverina region".[5]
Description
Carrathool Bridge is an Allan-type timber truss single-lane road bridge with a steel lift span. It has two timber truss spans, each of 21.8 metres (72ft). There are three timber approach spans at each end giving the bridge an overall length of 115.5 metres (379ft).[1][6]
The lift span is of the Bascule type and is supported on cylindrical twin iron piers. The timber truss spans are supported on timber trestles. The bridge provides a carriage way with a minimum width of 4.3 metres (14ft).[1]
A timber post and rail guard rail extends the full length of the bridge.[1] Up until its closure in 2019, the bridge was in intact condition.[1]
In November 2019, Roads & Maritime Services announced that the heritage-listed Carrathool Bridge would be removed from the New South Wales conservation list of bridges. Its immediate conservation future is unclear.[7]
Heritage listing
Heritage boundaries
Completed in 1922, the Carrathool bridge is an Allan-type timber truss road bridge, and has a rare Bascule type lift span to allow river craft to pass. In 1998 it was in good condition. As a timber truss road bridge, it has many associational links with important historical events, trends, and people, including the expansion of the road network and economic activity throughout NSW, and Percy Allan, the designer of this type of truss. Allan trusses were third in the five-stage design evolution of NSW timber truss bridges, and were a major improvement over the McDonald trusses which preceded them. Allan trusses were 20% cheaper to build than McDonald trusses, could carry 50% more load, and were easier to maintain. The Bascule lift span is a rare feature, and has associational links with the historic river trade, and has much to reveal about late 19th century civil engineering and manufacturing technology. In 1998 there were 38 surviving Allan trusses in NSW of the 105 built, and 82 timber truss road bridges survive from the over 400 built. The Carrathool bridge is a representative example of Allan timber truss road bridges, and is assessed as being State significant, primarily on the basis of its technical and historical significance.[1]
The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history.
Through the bridge's association with the expansion of the NSW road network, its ability to demonstrate historically important concepts such as the gradual acceptance of NSW people of American design ideas, and its association with Percy Allan, it has historical significance.[1]
The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.
The Bascule lift span is a distinctive visual feature, embodying the spirit of late 19th-century aesthetics. Further, its function can be clearly seen, and shows unambiguously the innovation which went into its design. The bridge exhibits the technical excellence of its design, as all of the structural detail is clearly visible. In the context of its landscape it is visually attractive. As such, the bridge has substantial aesthetic significance.[1]
The place has strong or special association with a particular community or cultural group in New South Wales for social, cultural or spiritual reasons.
Timber truss bridges are prominent to road travellers, and NSW has in the past been referred to as the "timber truss bridge state". Through this, the complete set of bridges gain some social significance, as they could be said to be held in reasonable esteem by many travellers in NSW.[1]
The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.
The bridge is highly technically significant because it is an example of an Allan truss, and is representative of some major technical developments that were made in timber truss design by the Public Works Department. The Bascule lift span is a rare feature, and has associational links with the historic river trade, and has much to reveal about late 19th century civil engineering and manufacturing technology.[1]
The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.
In 1998 there were 38 surviving Allan trusses in NSW of the 105 built, and 82 timber truss road bridges survive from over 400 built. 3 bascule lift span bridges survive in NSW, and the Carrathool bridge is the only one in a timber truss road bridge.[1]
The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales.
The bridge is representative of Allan truss bridges.[1]
The Grafton Bridge is a heritage-listed bascule truss bridge that carries Bent Street and North Coast railway line across the Clarence River in Grafton, New South Wales, Australia. The bridge links the Grafton central business district with South Grafton, and was added to the New South Wales State Heritage Register on 2 April 1999.
The Victoria Bridge is a heritage-listed timber trestle truss road bridge across the Stonequarry Creek, located at Prince Street in the south-western Sydney town of Picton in the Wollondilly Shire local government area of New South Wales, Australia. The bridge is owned by Transport for NSW, an agency of the Government of New South Wales. The bridge is also known as the Victoria Bridge over Stonequarry Creek. It was added to the New South Wales State Heritage Register on 20 June 2000. Designed by Percy Allan and opened on 7 October 1897, Victoria Bridge employs Allan trusses and was built by C. J. Ford of Sydney.
This list documents historical bridges located in New South Wales, Australia. Road, rail and pedestrian bridges are listed. Generally bridges built before World War II (1939) have been included in this list.
The Prince Alfred Bridge is a wrought iron truss and timber beam partially-disused road bridge over the Murrumbidgee River and its floodplain at Middleton Drive, Gundagai, Cootamundra-Gundagai Regional Council, New South Wales, Australia. The heritage-listed road bridge was designed by William Christopher Bennett and built from 1864 to 1867 by Francis Bell. It is also known as Prince Alfred Bridge – Iron Road Bridge and Iron Bridge over Murrumbidgee River at Gundagai. The iron bridge is owned by Transport for NSW and the timber viaduct is owned by Crown Lands. The bridge was added to the New South Wales State Heritage Register on 5 July 2019 and on the Register of the National Estate on 21 March 1978.
Morpeth Bridge is a heritage-listed road bridge over the Hunter River at Morpeth, New South Wales, Australia. It was designed by Percy Allan and built from 1896 to 1898 by Samuel McGill. It is also known as Morpeth Bridge over the Hunter River. The property is owned by Transport for NSW.
The Goodradigbee River Bridge is a heritage-listed road bridge that carries Main Road across the Goodradigbee River in Wee Jasper, New South Wales, Australia. It was designed by Percy Allan and built in 1896 by W. J. Lansdown. The bridge is also known as the Wee Jasper Bridge over Goodradigbee River. The bridge is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Wallaby Rocks Bridge is a heritage-listed road bridge that carries Hill End Road across the Turon River, at Wallaby Rocks near Sofala, New South Wales, Australia. It was designed by Percy Allan and built in 1897 by E. Taylor of Balmain. The bridge is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
Old Cobram-Barooga Bridge is a heritage-listed former road bridge and now footbridge over the Murray River at Barooga-Cobram Road, Barooga, New South Wales, Australia. The bridge links Barooga with Cobram, its sister town in Victoria. It was designed by Ernest de Burgh (engineer) and the New South Wales Department of Public Works and built from 1900 to 1902. It is also known as RMS Bridge No 3247. It is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 1 April 2016.
The Dubbo rail bridge over Macquarie River – Wambuul is a heritage-listed railway bridge on the Main Western line across the Macquarie River, located west of the Dubbo central business district in New South Wales, Australia. It was designed by John Whitton as the Engineer-in-Chief for the New South Wales Government Railways. The bridge was built during 1884 by Benjamin Barnes, with ironwork by Cochrane & Co, Middlesborough, England. The railway bridge is also known as the Dubbo Lattice Railway Bridge. The property is owned by Transport Asset Holding Entity, an agency of the Government of New South Wales. The bridge was added to the New South Wales State Heritage Register on 2 April 1999 and was listed on the Register of the National Estate on 18 April 1989.
The Murray River bridge is a heritage-listed road bridge that carries Main Road across the Murray River located at Barham in the Murray River Council local government area of New South Wales, Australia. It was designed by Department of Public Works and built in 1904 by John Monash. The bridge is also known as the Barham Bridge over Murray River and the Barham bridge. The bridge is owned by the Murray River Council and was added to the New South Wales State Heritage Register on 20 June 2000.
The Coonamit Bridge is a heritage-listed road bridge that carries Swan Hill Road across the Wakool River, connecting Mallan and Dilpurra in the Riverina region of New South Wales, Australia. The bridge was designed by Harvey Dare and built in 1929. The bridge is owned by Transport for NSW and was added to the New South Wales State Heritage Register on 20 June 2000.
The Murray River road bridge is a heritage-listed road bridge that carries Swan Hill Road across the Murray River, on the border between New South Wales and Victoria, Australia. The bridge connects Murray Downs in New South Wales with McCallum Street in Swan Hill, Victoria. The bridge was built in 1896 and is owned by Transport for NSW. The bridge is also called the Swan Hill Bridge and the Swan Hill-Murray River Road Bridge. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Tooleybuc Bridge is a dual heritage-listed road bridge that carries Tooleybuc Road across the Murray River, located in Tooleybuc, New South Wales, Australia. It was built in 1925. The bridge is owned by the Transport for NSW, and is also called the Tooleybuc Bridge over Murray River. The bridge was added to the New South Wales State Heritage Register on 20 June 2000 and the Victorian Heritage Register on 10 July 2008.
The Paterson River bridge, Vacy is a heritage-listed road bridge that carries Gresford Road across the Paterson River located in Vacy, New South Wales, Australia. It is situated about 300 metres south of the junction of Gresford Road and Summer Hill Road. The bridge was designed by Percy Allan and built in 1888 by Taylor and Littleproud. The bridge is also known as the Vacy Bridge over Paterson River. The bridge is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Karuah River bridge is a heritage-listed road bridge that carries the Weismantels-Dingadee Road across the Karuah River, located at Monkerai, New South Wales, Australia. The bridge is also known as the Monkerai Bridge over Karuah River. The bridge is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
Colemans Bridge is a heritage-listed road bridge that carries Union Street across the Leycester Creek in Lismore, New South Wales, Australia. It was designed by Harvey Dare and built in 1907 by W. F. Oakes. The bridge is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Dunmore Bridge is a heritage-listed road bridge that carries Clarence Town Road across the Paterson River in Woodville, New South Wales, Australia. It was designed by Percy Allan and built in 1899 by Morpeth contractor, S. McGill. The property is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Hinton Bridge over Paterson River is a heritage-listed road bridge that carrier the Hinton-Morpeth Road across the Paterson River at Hinton, New South Wales, Australia. The bridge was designed by Ernest de Burgh and built in 1901. The bridge is owned by Transport for NSW. The bridge was added to the New South Wales State Heritage Register on 20 June 2000.
The MacDonald River bridge is a heritage-listed road bridge that carries St Albans Road across the MacDonald River at St Albans, New South Wales, Australia. It was designed by Ernest de Burgh and built by John Ahearn and Son. It is also known as Norton Bridge. The property is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 20 June 2000.
The Wollombi Brook bridge is a heritage-listed road bridge that carries Putty Road across the Wollombi Brook at Bulga, New South Wales, Australia. The bridge was designed by Harvey Dare and built in 1912. The bridge is owned by Transport for NSW. The bridge was added to the New South Wales State Heritage Register on 20 June 2000.
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.
