Bussell Highway Duplication - Capel to Sabina

Bussell Highway is the main link between Perth, Bunbury and Busselton-Margaret River area, supporting the tourism, forestry and agricultural industries in the region.  It is also an important commuter link for many residents who live in the Busselton / Margaret River area and work in Bunbury or the Perth metropolitan area.

The 46 km section of Bussell Highway between Bunbury and Busselton is a four lane dual carriageway, aside from a 17 km section between Capel and north of Busselton, which is a two lane single carriageway with passing lanes at approximately 5 km intervals in each direction.

Traffic volumes in this section exceed the capacity of the single carriageway section at times resulting in congestion and delays.

The average annual daily traffic on the single carriageway section varies from approximately 14,000 vehicles per day (vpd) at the northern end to approximately 13,000 vpd at the southern end.  Traffic volumes fluctuate significantly, with Friday traffic typically around 16,000 vpd or greater.  Extreme peaks are experienced on most holiday long weekends when traffic flows can be in the order of 13,000 vpd in one direction alone.

On Friday afternoons, due to the large southbound traffic volumes attempting to merge from two lanes into a single lane, it is common for a queue of traffic to form on the southbound carriageway where the dual carriageway ends just south of Capel.  The queue often extends through intersections that provide access into the Capel townsite, causing inconvenience and safety concerns for traffic accessing the townsite.

Similarly, high traffic volumes heading north towards Perth after a long weekend are experienced.  As traffic growth continues, periods of congestion on this major rural highway will become more frequent and longer in duration.

We are continuing to seek funding for the project from the State and Federal Governments.

Latest news

We have completed some pre-construction works on the Capel to Hutton Road section including fencing, service relocations and clearing. Although the project is currently unfunded, it requires significant and lengthy pre-construction works including preloading to consolidate weak sub soil conditions, before works can commence. 

Scope of works

  • Geotechnical investigations
  • Road and bridge designs
  • Service and utility impacts investigations and relocations
  • Land acquisition
  • Environmental and heritage impacts investigations and approvals
  • Working with the Shire of Capel and City of Busselton to finalise planning 


Clearing of the section between Capel and Hutton Road is complete.

An environmental impact assessment is currently being prepared in order to progress environmental approvals for the remaining 12.5 km section (Hutton Road to Sabina).


​Key benefits

  • Remove the problem of the Friday afternoon southbound merging queue adversely impacting on the intersections into Capel townsite
  • Increase capacity and safety of the highway especially on the long weekends and holiday traffic.
  • Provide safer overtaking opportunities for all vehicles
  • Reduce driver frustration
Last Updated: 12 September 2018