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Sydney Harbour Bridge ClimbSydney Harbour bridge climb like you've never seen it before from one of the worlds best vantage points taking a breathtaking bridge climb on the sydney harbour bridge climb and experience life on top of this massive man made steel structure just see how the steel workers that built this world famous structure on the sydney harbour bridge climb and how they would have seen the harbour from its most glorious highest breathtaking point of the harbour and city skyline.
Some history on the bridge as you go on the sydney harbour bridge climb. The bridge's two ends are located in at Dawes Point (in Sydney's Rocks area) and Milsons Point (in Sydney's lower North Shore area).It carries 6 lanes of road traffic on its main roadway, 2 lanes of road traffic (formerly 2 railway tracks) and a footpath on its eastern side, and 2 railway tracks and a bicycle path along its western side. The road carried across the bridge is known as the Bradfield Highway and is about 2.4 km long, making it one of the shortest highways in Australia. (The shortest, also called the Bradfield Highway, is found on the Frank Jolly bridge in Brisbane). At 48.8m wide, it is listed by Guinness World Records as the widest bridge in the world. The bridge deck portion of the highway is 1.149 km long. It is concrete and lies on trimmers (beams that run along the length of the bridge). The trimmers themselves rest on steel beams that run along the width of the bridge. The trimmers and beams are visible to boats that go underneath the bridge. The arch is composed of two 28-panel arch trusses. Their heights vary from 18 metres (at the center of the arch) to 57 metres (besides the pylons). The arch span is 503 metres and the weight of the steel arch is 39,000 tons. The arch's summit is 134 m above mean sea level, though it can increase by as much as 18 cm on hot days as the result of steel expanding in heat. Two large metal hinges at the base of the bridge accommodate these expansions and contractions and thereby prevent the arch from being damaged. The two pairs of pylons at each end are about 89 metres high and are made of concrete and granite. A museum and tourist centre with a lookout of the harbour can be found in one of the southern pylons. Abutments - which support the ends of the bridge - are contained at the base of the pylons. They prevent the bridge from stretching or compressing due to temperature variations.
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