Lennox Bridge was also known as "The Horseshoe Bridge" and was originally known as Lapstone Bridge. It was renamed in honour of David Lennox, the designer. Here: https://w3w.co/rail.claim.already It was opened in 1833, and is the oldest surviving stone arch bridge on the Australian mainland. It replaced an earlier crossing of the creek 600m further south, which today survives as a walking track. It crosses Brookside Creek, also known as Lapstone Creek, on the road known as Mitchells Pass. A nearby quarry is thought to have been created for the purpose of providing stone for the bridge. The bridge was constructed in Emu Pass. The bridge served as the main route to the Blue Mountains for 93 years until 1926, when the Great Western Highway was re-routed via the Knapsack Viaduct. It was added to the New South Wales State Heritage Register on 2 April 1999. David Lennox built several prominent bridges that remain in use today including Lennox Bridge, Parramatta in 1836.
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