Auburn Substation

N J Construction recently completed the construction of a traction substation for Railcorp at Auburn, Sydney. The value of the project was $6 Million, and the project was delivered on time to the exacting standards of Railcorp.

The activities included a concrete piled and shotcrete retaining wall adjacent to the live railway tracks. Substantial site works, including excavation, deep footings, a myriad of ducts and cabling including under track crossings and connections to transmission line structures.

The building structure was substantial, and was constructed within a very tight construction space. The site was challenging with a number of complexities. The substation was within the rail corridor necessitating full time monitoring and daily safety briefings regarding hazards associated with this environment.

The site was adjacent to Rawson Street with significant traffic flows requiring ongoing traffic management for site access. The site was within a floodway that required substantial deviation arrangements for site protection.

The site had live 33kV transmission lines overhead which required innovative methods for completing construction works such as roof truss installations and heavy machinery access. N J Construction received praise from RailCorp’s asset owner for the high quality of the finished product.

Key project


  • Extensive Traffic Management
  • Zero Quality Non Conformance’s
  • Demolition of existing substation
  • Substantial flood water deviation works
  • Working next to operating main Sydney line-rail tracks