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Road linking Sydney to western NSW shut by damage to 194yo bridge

The 190-year-old Mitchell's Causeway bridge closure affects 11,000 vehicles daily, highlighting a decade of maintenance neglect amid fragile geology, Transport for NSW said.

  • On Monday, the Great Western Highway was closed in both directions after cracks at Mitchell's Causeway, with no reopening timeline, Transport for NSW confirmed.
  • Minister Jenny Aitchison explained that real-time slope equipment installed in December 2025 showed movement, attributed to a 'fragile geological ecosystem' and neglect.
  • Diversions through Lithgow are funneling traffic via the Darling Causeway, Bells Line of Road, and Chifley Road, straining routes and causing congestion, as about 11,000 vehicles, including 1,800 heavy vehicles, use the highway daily.
  • Residents say the closure causes lengthy trips, with some adding 45 minutes, and the highway's condition has reignited a political row over funding and infrastructure.
  • Federal figures have reacted, with MPs and mayors demanding immediate budget commitments and calling the Blackheath–Mount Victoria bypass tunnel 'no longer fit for purpose.
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ABC Australia broke the news in Australia on Sunday, March 8, 2026.
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