MONA Jetty Tunnel

Spectran Group successfully delivered the civil construction and tunnelling works for the Mona Jetty Tunnel, providing a new underground connection between the MONA Jetty and the Museum of Old and New Art. Delivered within a sensitive waterfront environment, the project required specialist engineering, precision excavation, and strict environmental management throughout all stages of construction.

Scope of Works

• Design and construction of a temporary foreshore works platform using barge access.
• Development and implementation of project-specific Environmental and Weed Management Plans in accordance with EPA and local council requirements.
• Bulk excavation, embankment stabilisation, and water diversion works.
• Precision sandstone excavation and final trimming to engineering tolerances.
• Supply and operation of specialist tunnelling equipment, including a 24-tonne Tunnel Boring Machine (TBM), air handling units, compressors, generators, and associated plant.
• Design and installation of mine mesh and rock bolt support systems in collaboration with geotechnical and structural engineers.
• Successful tunnel breakthrough into the existing museum while maintaining the highest standards of safety, quality, and environmental compliance.

The project demonstrates Spectran Group’s capability to deliver complex civil and underground infrastructure in environmentally sensitive locations, combining specialist tunnelling expertise with innovative construction methodologies.