Statistics:
- Length: 140 km (Forrest Hwy: 40 km) (South Yunderup to West Pinjarra: 10 km)
- Northern
Terminus: Burns Beach Road (SR87) at Currambine in Perth's
northern suburbs
- Southern
Terminus: The roundabout with Baldivis Road and Safety Bay
Road (SR18) at Baldivis in Perth's southern suburbs
- Suburbs, Towns & Localities along route: Birchmont, West Pinjarra and South Yunderup
Route Numbering:
- Current:

General Information:
The Forrest Highway, along with the Kwinana and Mitchell Freeways, are without a doubt one of the most important road systems in the Perth metropolitan area, and the southwestern part of the state.
Running in a north-south direction, the freeways link the north and southern suburbs of Perth together plus the southern city of Mandurah and the state's southwest, but also act as a coastal link between the northern and southern parts of the state. Built in stages from the late 1950s the route has seen enormous changes / extensions and is continuously undergoing expansion to this day.
Unique to the freeway sections is the passenger railway line down the median of the road corridor, which in parts also travels alongside other modes of public transport such as buses.
The route varies from 2 to 3 lanes wide in each direction, with provision in most of the newer sections to have another 1 to 2 lanes to be added when required. Exits along the route are somewhat close together, this is probably due to the large number of suburbs state route 2 services, south of Baldivis, the spacings are longer.
When first planned, the Mitchell Fwy was called the Yanchep Highway, as its envisaged that eventually the route will connect to the town.
History (Forrest Hwy):
- December 2006: Works commence on the Forrest Highway. 1
- 20 September 2009: Opening of Forrest Highway from Lake Clifton to South Yunderup. 2
Paull Road Interchange:
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Construction Sign:
Works sign on Paull Rd, looking northwest, approaching the junction with Forrest Hwy. April 2009.
Image © Paul Rands
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Kwinana Freeway Junction:
Corner of Paull Road and Forrest Freeway at West Pinjarra. April 2009.
Image © Paul Rands
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Greenlands Road Interchange:
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Forrest Highway Junction:
Looking north at West Pinjarra. April 2009.
Image © Paul Rands |
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Forrest Highway Junction:
Looking south at West Pinjarra. April 2009. Image © Paul Rands |
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Greenlands Road Reconstruction:
As part of the works for the Forrest Hwy, Greenlands Rd at West Pinjarra was upgraded. April 2009.
Image © Paul Rands |
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Works Depot:
Main works depot at West Pinjarra. April 2009.
Image © Paul Rands |
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Works Depot:
Main works depot at West Pinjarra. April 2009. Image © Paul Rands |
South Yunderup Road Interchange:
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Northbound Ramp:
Northbound on ramp to Forrest Hwy from South Yunderup Rd at South Yunderup. April 2009.
Image © Paul Rands |
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Floodplain Crossing:
Forrest Hwy as it crosses the floodplain alongside South Yunderup Rd at South Yunderup. April 2009.
Image © Paul Rands |
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South Yunderup Road Interchange:
Looking east along South Yunderup Road at South Yunderup. April 2009.
Image © Paul Rands |
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Construction Sign:
Sign announcing the Perth-Bunbury Highway works, South Yunderup Road at South Yunderup. April 2009.
Image © Paul Rands |
Pinjarra Road Interchange:
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Portable VMS:
Portable variable message sign on Pinjarra Rd at North Yunderup. April 2009.
Image © Paul Rands |
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Portable VMS:
Portable variable message sign on Pinjarra Rd at Ravenswood near Old Mandurah Rd intersection. April 2009. Image © Paul Rands |
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Contraflow:
Contraflow at North Yunderup on Pinjarra Rd approaching the Forrest Hwy interchange. April 2009.
Image © Paul Rands |
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Contraflow:
Contraflow at Ravenswood on Pinjarra Rd approaching the Old Mandurah Rd intersection. April 2009. Image © Paul Rands |
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Pinjarra Road Construction Zone:
Eastbound on Pinjarra Road at the Forrest Highway interchange. April 2009.
Image © Paul Rands |
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Pinjarra Road Construction Zone:
Westbound on Pinjarra Road at the Forrest Highway interchange. April 2009. Image © Paul Rands |
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Pinjarra Road Construction Zone:
Eastbound on Pinjarra Road at the Forrest Highway interchange. April 2009. Image © Paul Rands |
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1 Southern Gateway Alliance Fact Sheet - Project Facts 01
2 Southern Gateway Alliance Media Release - Kwinana Freeway Extension and Forrest Highway Opening Celebration
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