Statistics:
- Length: 140 km (Kwinana Fwy: 73 km) (Baldivis to South Yunderup: 31 km)
- Northern
Terminus: Burns Beach Road (SR87) at Currambine in Perth's
northern suburbs
- Southern
Terminus: Forrest Highway (former Old Coast Road and Perth-Bunbury Highway) (NR1) at Lake Clifton
- Suburbs,
Towns & Localities along route: Baldivis, Karnup, Keralup, Lakelands, Parklands, Barragup, Nambeelup and North Yunderup
Route Numbering:
- Current:

- Road Authority Internal Classfication: H15 Kwinana Freeway 1
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:
- 1957: Commencement of construction
of the Narrows Bridge and first stage of the Kwinana Fwy. 2
- 1967: Construction of the Kwinana
Freeway in inner southern Perth suburbs. 2
- 3 December 1976: South Perth
interchange opened. 6
- 1975: Additional land reserved for
the future extension of the Kwinana Fwy. 3
- 19 July 1979: Kwinana Freeway /
Canning interchange including Manning Road Bridge fully operational. 6
- October 1980: Narrows Bridge median
lane opened to Northbound traffic. 6
- 29 March 1982: Narrows Bridge
median lane opened to southbound peak traffic, thus becoming a
reversible lane. 6
- 9 May 1982: Mt Henry Bridge and
Kwinana Freeway extension (6.5 km) from Canning Bridge to South Street
opened. 6
- February 1987: Introduction of bus
lanes. 2
- 18 December 1989: Kwinana Fwy bus
lane Canning Bridge to city opened. 6
- 14 July 1991: Kwinana Freeway from
South St to Farrington Rd opened. 6
- 12 December 1991: Kwinana Freeway
from Farrington Rd to Forrest Rd opened. 6
- November 1991: Kwinana Freeway bus
lane extended from Canning Bridge to Mt Henry Bridge. 6
- 11 September 1994: Extension of
Kwinana Freeway from Forrest Road to Thomas Road Kwinana opened on by
Kim Beazley. 2
- 1999-2001:
Construction of the South West Metropolitan Railway down the centre of
the freeway alignment - this was done by relocating 16 kilometres of
existing northbound carriageway 15 metres westwards. Also part of the
works was the construction of a 12km freeway extension southwards from
Thomas Road to Safety Bay Road, including interchanges at Mortimer and
Mundijong Road and freeway overpasses at Millar Road. 5
- 12
March 2006: the connection of the Roe Highway Stage 7, from South
Street to the Kwinana Freeway, officially opened to traffic. 6
- December 2006: Works commence on the Kwinana Freeway Extension from Safety Bay Road (SR18) Interchange at Baldivis to Pinjarra Road at North Yunderup. 7
- 20 September 2009: Completion of the 70 km Perth to Bunbury Highway project (Kwinana Fwy / Forrest Hwy) - bypassing the heavily populated areas in Mandurah and the Dawesville Peninsula, and avoiding the inland communities on South Western Highway. The route is freeway standard from Safety Bay Road to Pinjarra Road with the remainder of the route built as a divided rural highway. In the future as traffic demands increase, the highway will be upgraded to a freeway standard for its entire length. 6
Lakes Road Interchange:
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Advance Directional Sign:
AD sign at Parklands approaching the Kwinana Fwy interchange. April 2009.
Image © Paul Rands
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Advance Directional Sign:
AD sign at Stake Hill approaching the Kwinana Fwy interchange. April 2009.
Image © Paul Rands
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Paganoni Road Interchange:
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Eastbound at Karnup:
Looking eastbound at Karnup. April 2009.
Image © Paul Rands |
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Eastbound at Karnup:
Looking eastbound at Karnup. April 2009. Image © Paul Rands |
Karnup Road Interchange:
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Kwinana Freeway Northbound carriageway:
Looking north at Baldivis. April 2009.
Image © Paul Rands |
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Kwinana Freeway Southbound carriageway:
Looking south at Baldivis. April 2009. Image © Paul Rands |
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Kwinana Freeway Northbound carriageway:
Looking north at Baldivis. April 2009. Image © Paul Rands |
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Advance Directional Sign:
AD sign at Baldivis, looking west. April 2009.
Image © Paul Rands |
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Advance Directional Sign:
AD sign at Baldivis, looking east. April 2009. Image © Paul Rands |
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Intersection Directional Sign:
ID sign, westbound at Baldivis. April 2009.
Image © Paul Rands |
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Prohibition Sign:
Sign looking east on Karnup Rd showing a list of prohibited vehicles on the Kwinana Fwy. April 2009.
Image © Paul Rands |
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Northbound On Ramp:
Looking eastbound at Baldivis. April 2009. Image © Paul Rands |
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Intersection Directional Sign:
ID sign, eastbound at Baldivis. April 2009. Image © Paul Rands |
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Intersection Directional Sign:
ID sign for the southbound ramp, eastbound at Baldivis. April 2009. Image © Paul Rands |
1 Main
Roads WA Metropolitan Road Fact Sheet, 31 March 2008
2 State Library of Western Australia
3 Australasian Legal
Information Institute
4 National Library
of Australia
5 Australian
Institute of Project Management
6 Main Roads WA
7 Southern Gateway Alliance Fact Sheet - Project Facts 01
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