Road Photos & Information: Western Australia South Western Highway (State Route 20)

Road Photos & Information: Western Australia

South Western Highway (State Route 20) - Armadale to Pinjarra

Statistics:

Length: 153 km (Armadale to Pinjarra: 57 km)
Northern Terminus: Corner of Albany Hwy (SR30) & Armadale Rd (SR14) at Armadale.
Southern Terminus: Corner of Robertson Dr & Picton Rd, Glen Iris in Bunbury.
Miscellaneous: Continues as NR1 from Bunbury to Wapole.
Suburbs, Towns & Localities along route: Armadale, Darling Downs, Byford, Jarrahdale, Serpentine, Keysbrook, North Dandalup and Pinjarra.

Route Numbering:

Current:
Multiplexed with:
Former:
Road Authority Internal Classification: H9 1

General Information:

The South Western Highway was once part of the main route between Perth and Bunbury, and was signed as NR1. The route runs parallel to the current NR1 alignment, but about 20 to 30 km inland.

Consisting of mainly rural highway, the route runs north-south and connects numerous small towns that sprang up with the introduction of the railway line through the area during the 1800s.

State Route 107 duplexes SR20 from Burekup to Bunbury. State Route 22 duplexes SR20 for about 200 metres in Mundijong.

History:

1980s: National Route 1 rerouted via Old Coast Road, SR20 issued on former NR1 alignment
2003: new passing lane near Balingup completed. 2
2006: additional passing lanes added to the highway, one south of Yarloop, one north of Harvey and two north of Brunswick Junction. 3

Pinjarra to Armadale (Northbound)		Armadale to Pinjarra (Southbound)
Preview:	Description:	Preview:	Description:
	Pinjarra Welcome Sign: Town name sign as you enter the town of Pinjarra. July 2008. Image © Paul Rands		Intersection Directional Sign: ID facing the eastern terminus of SR21, Thomas Road at Darling Downs. December 2007. Image © Paul Rands
	Black Advance Directional Sign: Northbound black advance directional sign on South Western Hwy approaching Pinjarra Rd, July 2008. This is the only black directional sign left on the mainline between Byford and Bunbury. Image © Paul Rands		Entering Byford: Southbound entering the town of Byford. December 2007. Image © Paul Rands
	Advance Directional Sign: AD sign for Pinjarra-Williams Road situated at the Henry Street intersection in Pinjarra near the Murray River. July 2008. Image © Paul Rands		Reassurance Marker: Southbound after the Thomas Rd intersection at Byford. December 2007. Image © Paul Rands
	Distance Sign: RD sign as you head northbound from Pinjarra, July 2008. Image © Paul Rands		Byford Town Centre: Southbound in Byford near Beenyup Road and Abernethy Road, December 2007. Image © Paul Rands
	Entering North Dandalup: Northbound entering the town of North Dandalup, July 2008. Image © Paul Rands		Approaching Watkins Roads: Southbound advance directional sign for the Watkins Rd intersection in Jarrahdale, December 2007. Image © Paul Rands
	Distance Sign: RD sign inside the town centre of North Dandalup. July 2008. Image © Paul Rands		Watkins Road intersection: Southbound at Watkins Rd Jarrahdale. December 2007. Image © Paul Rands
	Entering Keysbrook: Northbound entering the town of Keysbrook, July 2008. Image © Paul Rands		Approaching Jarradale Rd: Southbound at Jarrahdale approaching SR22, Jarrahdale Rd, December 2007. Image © Paul Rands
	Advance Directional Sign: AD sign in the town of Serpentine approaching Karnup Road, July 2008. Image © Paul Rands		Jarrahdale Road Junction: Southbound, Jarrahdale, December 2007. Image © Paul Rands
	Advance Dirctional Sign: Northbound approaching the junction with Jarrahdale Road (SR22) at Mundijong, July 2008. Image © Paul Rands		Distance Sign: Southbound RD sign in Jarrahdale, south of Jarrahdale Road, December 2007. Image © Paul Rands
	Jarrahdale Road Intersection: Looking northbound through the Jarrahdale Rd (SR22) intersection, July 2008. Image © Paul Rands		Serpentine River: Southbound as you pass the AD sign for Karnup Road and Falls Road at Serpentine. The bridge is for the Serpentine River, December 2007. Image © Paul Rands
	Advance Directional Sign: Northbound approaching Watkins Road (SR22) at Mundijong, July 2008. Image © Paul Rands		Serpentine, Southbound: Looking through Serpentine at the junction with Karnup and Falls Roads, December 2007. Image © Paul Rands
	Watkins Road Intersection: Northbound as you travel through the Watkins Road intersection at Mundijong, July 2008. Image © Paul Rands		Entering Keysbook: Southbound at Keysbrook, December 2007. Image © Paul Rands
	Distance Sign: RD sign after the Watkins Road intersection at Mundijong. July 2008. Image © Paul Rands		Entering North Dandalup: Town sign as you enter North Dandalup. December 2007. Image © Paul Rands
	Entering Byford: Travelling northbound into the town of Byford, July 2008. Image © Paul Rands		North Dandalup: Southbound through the town of North Dandalup, December 2007. Image © Paul Rands
	Approaching Abernethy and Beenyup Roads: Looking northeast at Byford, approaching Abernethy & Beenyup Roads. April 2009. Image © Paul Rands		Black AD Sign: Black advance directional sign in North Dandalup approaching Delpark Road. Southbound, December 2007. Image © Paul Rands
	Advance Directional Sign: AD sign approaching the Thomas Road (SR21) intersection at Byford, July 2008. Image © Paul Rands		Distance Sign: Distance sign and overtaking lanes as you leave North Dandalup. Southbound, December 2007. Image © Paul Rands
	Intersection Directional Signs: ID sign assemblies at the Thomas Rd (SR21) intersection at Byford. April 2009. Image © Paul Rands		Entering Historic Pinjarra: Sign denoting the town of Pinjarra and its historical significance. Southbound, December 2007. Image © Paul Rands
	Approaching Eleventh Road: Looking northeast at Wungong, approaching Eleventh Road. April 2009. Image © Paul Rands		Level Crossing: Crossing the railway crossing in Pinjarra. Southbound, December 2007. Image © Paul Rands
	Entering Armadale: Looking northeast as you enter Armadale, nears Hobbs Drive. April 2009. Image © Paul Rands		AD Sign: Advance directional sign approaching Pinjarra-Willams Road in Pinjarra. Southbound, December 2007. Image © Paul Rands
	Approaching William Street & Bedfordale Hill Road: Looking northeast at Armadale, approaching William St & Bedfordale Hill Rd. April 2009. Image © Paul Rands		Murray River: Crossing the Murray River in Pinjarra. Southbound, December 2007. Image © Paul Rands
	Third Road Intersection: Looking northeast at Third Rd in Armadale. April 2009. Image © Paul Rands		George Street Pinjarra: Pinjarra's CBD as SR20 passes through, southbound, December 2007. Image © Paul Rands
	Approaching Albany Highway & Armadale Road: Advance directional sign approaching the intersection with Albany Hwy (SR30) and Armadale Rd (SR14) in Armadale. April 2009. Image © Paul Rands		Corner of George & Peel Street: Pinjarra's CBD. Southbound, December 2007. Image © Paul Rands
	Albany Highway & Armadale Road: Flashing warning lights approaching the traffic signs at the Armadale Rd / Albany Hwy junction in Armadale, which is the northern terminus of SR20. April 2009. Image © Paul Rands		Distance Sign: RD sign as you leave Pinjarra. Southbound, December 2007. Image © Paul Rands
	Intersection Directional Sign: AD sign assembly at the junction of Armadale Rd and Albany Hwy in Armadale. April 2009. Image © Paul Rands
	Intersection Directional Sign: AD sign assembly at the junction of Armadale Rd and Albany Hwy in Armadale. April 2009. Image © Paul Rands
Click here for the continuation of SR20 between Pinjarra and Harvey

1 Main Roads Western Australia, Metropolitan Road Fact Sheet, 31 March 2008.
2 Main Roads Western Australia
3 WA Department of Planning & Infrastructure

This site © Paul Rands. All rights reserved. Some portions © (copyright) by their respective & credited owners. Permission must be obtained before using any images from this site. For details, please email by clicking here.