Current Progress
The excavation works at Westmead have reached a major milestone — 15 metres underground.
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Roadheaders and rock hammers have completed excavation of the massive crossover cavern.
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The cavern features a cathedral-like design, carved deep into the ground.
Purpose of the Crossover Cavern
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This structure allows trains to switch tracks after departing Westmead.
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It provides greater operational flexibility for services heading back toward the Sydney CBD.
Next Steps
With excavation complete, the focus now shifts to:
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Waterproofing
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Steel fixing
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Formwork installation
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Concreting works
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