Telstra mobile black spot - case study

  • Engineering design
  • Construction and commissioning

The Federal Government's Mobile Black Spot Program is one of the largest ever expansions of mobile coverage in regional and remote Australia. 


The NSW Central Coast Black Spot program is focused on coverage in the Rail Corridor which snakes its way through various tunnels and valleys making mobile coverage difficult, the rail journey often takes more than two hours each way.
The long-anticipated upgrade is aimed at improving the 68km commute for about 30,000 people who travel between Sydney and the Central Coast by train each day.

The project has been jointly funded by the federal government, NSW government and Telstra.


UGL has been engaged by Telstra to install mobile phone base stations within the Sydney Trains rail corridor. A challenging environment which required teams to adhere to the constraints of working around rail, but also delaying assets within a rail-controlled setting. 

Our solution

UGL’s experience in the Rail Corridor positions us as the right partner to complete the work on time. UGL’s expert team are engaging with Sydney Trains, Telstra and where required specialised contractors to ensure we are all moving towards success. 

UGL’s scope includes:

  • 3.6km of cable infrastructure in Boronia and Woy Woy rail tunnels
  • construction and testing of 11 macro sites
  • finalising design on 3 macro sites, and
  • completing the optical fibre connectivity between the sites and Telstra’s exchange network.

Early stages

A weekend possession has already been completed, where the trains have stopped to allow work in the corridor to proceed. Three more possessions are planned with UGL taking full advantage of the unique opportunity to complete complex work. 

UGL has also been requested to take on extra work, including:

  • the finalising of three site designs
  • installation of cable trunking (pathway) along the rail corridor, and 
  • the completion of the optical fibre backbone.
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