Main Roads WA requires Western Power to authorise all load movements around the state where the load is 4.3m or higher. Transport operators must refer to Main Roads WA before applying to Western Power for authorisation.
Authorisation to transport oversized loads
Once we receive your application we will assess if the load can travel safely and what special conditions, if any, are required. We will then issue an Oversize Load Movement Authorisation setting out the conditions which must be adhered to at all times.
In some cases substantial planning and/or construction works are required (e.g. undergrounding, moving or raising powerlines). In these cases Western Power will quote on the work required.
Load movements within Western Power (SWIS) and Horizon Power networks (inter-district)
If you need to transport oversize loads between Western Power’s network and Horizon Power’s network, you can lodge a single inter-district application for travel with the network at the point of origin. Please refer to this map (PDF 700 Kb) that shows the boundaries for Western Power and Horizon Power. For further Inter-district boundaries see Horizon Power service area map
Load movements outside the Western Power network
If you need to transport oversize loads in outside of the SWIS in Western Australia, please refer to Horizon Power.