Ultegra was engaged by LendLease Bouygues Joint Venture (LLBJV) to undertake the design of four 11kV underground feeders to provide construction supply to the $3billion NorthConnex project. The four feeders had a total route length of 12km through areas of high service congestion such as Hornsby CBD and also required the crossing of numerous RMS classified roads and rail corridor crossings. The four feeders each terminated into a High Voltage Customer (HVC) Kiosk located at four different locations along the 9km tunnel route. The design development time and construction risk was minimised by undertaking strategic risk analysis and field investigations.
The initial engagement of Ultegra rapidly expanded into undertaking complex asset relocation designs for the Northern Interchange at Wahroonga, the Southern Interchange at West Pennant Hills and two other tunnel construction sites at Thornleigh and Pennant Hills which consisted of relocation of overhead, underground and street lighting assets. Ultegra undertook the detailed design of the street lighting for Pennant Hills Road and the Pacific Highway at these locations in accordance with the Australian Standards to ensure the road was safety illuminated.
Ultegra also undertook many relocations and power supply upgrades for other associated RMS assets such as Variable Message Signs (VMS) at various locations around the project. Other noteworthy works associated with this nation building project which Ultegra delivered include:
- Mt Kuring-gai Batch Plant Kiosk Substation establishment
- Asset relocation enabling works at the Southern Interchange 66kV Substation
- Hornsby Quarry asset relocation and street lighting upgrade
- Street lighting upgrade of Barclay overpass of the M2
- Staged temporary street lighting designs for M2 between Pennant Hills Road and Windsor Road
- Staged temporary street lighting designs for Pennant Hills Road
- Staged temporary street lighting design for the M1 Motorway and Pacific Highway
- Asset relocation and street lighting at Benson Close Wahroonga
- Augmentation and upgrade of M1 Motorway 11kV crossing at Wahroonga
Ultegra has enjoyed working with the LLBJV team in delivering this key infrastructure project. The delivery of this project is both a testament to Ultegra and the LLBJV team as they proactively worked together to develop innovative solutions to complicated engineering problems.