Sea Cliff Bridge

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Template:Use dmy dates Template:Use Australian English Template:Infobox Bridge

The Sea Cliff Bridge, together with the adjoining Lawrence Hargrave Drive Bridge, are two road bridges that carry the scenic Lawrence Hargrave Drive across the rockface on the Illawarra escarpment, located in the northern Illawarra region of New South Wales, Australia. The balanced cantilever and incremental launching girder bridges link the coastal villages of Coalcliff and Clifton and carry two lanes of traffic, and a pedestrian walkway.

The Sea Cliff Bridge was named by Makenzie Russell, who at the time was an eleven-year-old student, following a naming competition opened to local primary school students.[1] The Lawrence Hargrave Drive Bridge and the Lawrence Hargrave Drive are named in honour of Lawrence Hargrave, an Australian engineer, explorer, astronomer, inventor and aeronautical pioneer.

History

The Sea Cliff Bridge replaced a section of Lawrence Hargrave Drive that was permanently closed in August 2003 due to regular rock falls. A public outcry emerged over the road closure as Lawrence Hargrave Drive is the only road directly linking Coalcliff, Stanwell Park, Otford and Helensburgh to the northern suburbs of Wollongong.[2]

Description

The Template:AUD52 million Script error: No such module "convert". bridges brace against the Tasman Sea, up to Script error: No such module "convert". east of the original alignment of Lawrence Hargrave Drive. Completed in 2005, the Sea Cliff Bridge structure comprises a haunched box girder composed of prestressed concrete that was constructed using the balanced cantilever method, with five spans.[3] Adjoining the Sea Cliff Bridge is the Script error: No such module "convert". Lawrence Hargrave Drive BridgeTemplate:Spaced endash often not considered as two separate bridges. This latter girder bridge that was constructed using the incremental launching method, with seven spans, ranging from Script error: No such module "convert"., shares a common pier with the Sea Cliff Bridge.[4]

The bridges incorporate two traffic lanes of Script error: No such module "convert". and a Script error: No such module "convert". pedestrian pathway.[5] Cyclists are allowed to use the traffic lanes and there are shoulders on either side of the road of approximately 1.2 metres (4 ft) width.

The bridges were officially opened by the NSW Premier Morris Iemma on 11 December 2005, and were met with public approval and increased business for the area's tourism industry.[2]

The bridges sit in a harsh marine environment as it directly faces the open ocean and is affected by high sea swell splashing. It is well attested that concrete structures in such environments are especially susceptible to chloride induced corrosion of the steel reinforcement, which can eventually lead to expensive repair works and significantly decrease the life of the structure.[6][7]

Tourism

An hour south of Sydney, the bridges have been a major tourist spot since they opened in 2005.[8] The area adjacent to the bridges feature a scenic walkway surrounded by rocky cliffs[6] that is a popular location for love padlocks.[9]

Pioneer Walks published the route to the lookout and encouraged spectators to participate in an "unofficial walk with no safety precautions in place".[10] On 30 September 2018, a 24-year-old man hiked to the “lookout" atop the cliff overlooking the bridges, where he sat down to take a rest. The ground he sat on was loose, and he slid Script error: No such module "convert". to the cliff’s edge, where he then plummeted Script error: No such module "convert". to his death.[11]

File:The Seacliff Bridge Grand Pacific Drive, New South Wales, Australia at Sunrise. May 2020.jpg
Sea Cliff Bridge in May 2020

In popular media

The Sea Cliff Bridge and adjoining Lawrence Hargrave Drive Bridge were featured in a range of media including:

Gallery

See also

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References

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External links

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Template:Illawarra region topics Template:Road infrastructure in regional New South Wales

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