Main Roads Victoria: State Route 100

		State Route 100
		Great Ocean Road
		home \| state routes \| features

Reassurance Direction Sign eastbound on Great Ocean Road from Timboon - Peterborough Road.
September 1996. Photo courtesy of Doug Blackwell, VicRoads.

Designated Names Name List - Column 1 & 2 Successive Route Number Column 3	Surfcoast Highway	Princes Highway, Belmont - Spring Creek Bridge, Torquay	B100
	Great Ocean Road	Spring Creek Bridge, Torquay - Princes Highway, Allansford	B100
	Princes Highway West	Great Ocean Road, Allansford - Henty Highway, Bolwarra	A1
	Henty Highway	Princes Highway, Bolwarra - Madeira Packet Road, Portland	A200
Distance in Kilometres	400
Eastern Terminus	Madeira Packet Road, Portland
Western Terminus	Princes Highway West, Belmont
Lifespan	1986 - 1998

Duplexes

shared routes - column 1
Location of Duplex
column 2
Length of Duplex
in kilometres - column 3

National Route 1

Great Ocean Road, Allansford - Henty Highway, Bolwarra

106

State Route 107

Princes Highway, Bolwarra - Madeira Packet Road, Portland

Introduced in 1986, State Route 100 (SR100) followed the Victorian southwest coastline from Geelong to Portland, including the entire 240 km of the Great Ocean Road. It is the most prominent tourist route to have been given a State Route number. The first 20 km of SR100 was via the Surfcoast Highway connecting Geelong to the start of the Great Ocean Road at Torquay, while the last 115 km connected the western end of the Great Ocean Road to Portland via the Princes and Henty Highways.

SR100 traversed one of Australia's most rugged coastlines, home to one of Victoria's most prominent tourist attractions, the Twelve Apostles. Because of the nature of the south-western coast, the Great Ocean Road is quite windy, with large portions of the road cutting through cliffs.

Prior to 1990, the eastern terminus of SR100 was at the intersection of High Street and Corio Street, 1.2 km north up Torquay Road from Settlement Road. At the time, High Street was part of the Princes Highway (National Route 1) prior to its realignment via Settlement Road. The new alignment of the Princes Highway along Settlement Road became SR100's new terminus.

The duplex with National Route 1 and State Route 107 was not part of original State Route Numbering plans, but came about from political 'medelling'. When SR100 was introduced, the local member for Portland wanted the Princes Highway renamed the "Great Ocean Road" from Allansford to Portland. This was deemed unacceptable by VicRoads, who insisted it was inappropriate as the Princes Highway was more synonymous with National Route 1 (plus I also suspect that such a change would also mean more unnecessary 'paperwork' when it came to maintenance issues). As a compromise, SR100 was extended along the Princes and Henty Highways forming the duplexes with National Route 1 and SR107.^[1]

In 1998, B100 replaced SR100 along the Surfcoast Highway and Great Ocean Road, and SR100 was removed from both the Princes Highway and Henty Highway. B100 could be considered a loop route of M/A1 under the Statewide Route Numbering Scheme.

Map:

Interactive Maps:

Photos:

	Top: Intersection Direction Signs (ID) at Princes Highway / Surfcoast Highway intersection. Bottom: Advance Direction Sign (AD) eastbound on Princes Highway. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: AD westbound on Princes Highway. Bottom: ID at Princes Highway / Surfcoast Highway intersection. Photos courtesy of Doug Blackwell, VicRoads - taken 1996 and 97.
	AD southbound on Torquay Road before Princes Highway. Photo courtesy of Doug Blackwell, VicRoads - taken 1998.
	AD northbound on Surfcoast Highway before Princes Highway. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	END100 sign before Princes Highway. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID at Princes Highway / Surfcoast Highway intersection. Bottom: First Reassurance Direction Sign (RD) from Princes Highway. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: IDs at Pioneer Road / Surfcoast Highway intersection. Bottom: RD southbound from Pioneer Road. Note the mention of the Great Ocean Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID at Lower Duneed Road / Surfcoast Highway intersection. Note smaller than usual font for '100'. Bottom: AD westbound on Lower Duneed Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	RD nortbound from Lower Duneed Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: 'Cut and paste' AD before Bell Street in Torquay. Bottom: First RD westbound on Great Ocean Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Trailblazer (TB) facing Bambra Road in Aireys Inlet. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Deans Marsh - Lorne Road in Lorne. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	ID with odd SR100 shield facing Deans Marsh - Lorne Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Deans Marsh - Lorne Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Otway Lighthouse Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID facing Otway Lighthouse Road. Bottom: ID facing westbound traffic on Great Ocean Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	RD eastbound from Otway Lighthouse Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: AD before Otway Lighthouse Road. Bottom: RD westbound from Otway Lighthouse Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	ID facing Princetown Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: AD on Princetown Road before Great Ocean Road. Bottom: 'Great Ocean Road' tourist AD on Princetown Road before Great Ocean Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Princetown Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Cobden - Port Campbell Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID at Great Ocean Road / Cobden - Port Campbell Road intersection. Great Ocean Road makes a left here, with Cobden - Port Campbell Road straight ahead. Bottom: ID at Great Ocean Road / Cobden - Port Campbell Road intersection, facing eastbound traffic. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: AD southbound on Cobden - Port Campbell Road. Bottom: RD northbound on Cobden - Port Campbell Road from Great Ocean Road intersection. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	RD westbound from Cobden - Port Campbell Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	ID without SR100 shield facing Timboon - Peterborough Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	RD eastbound on Great Ocean Road from Timboon - Peterborough Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD before Old Peterborough Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD southbound on Old Peterborough Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID facing Old Peterborough Road. Bottom: ID westbound on Great Ocean Road for Old Peterborough Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: RD southbound from Dances Road. Bottom: AD northbound on Great Ocean Road before Dances Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Top: ID facing northbound Great Ocean Road traffic. Bottom: ID facing eastbound Great Ocean Road traffic. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD southbound before Warrnambool - Cobden Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD northbound before Warrnambool - Cobden Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	ID facing Warrnambool - Cobden Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	AD on Warrnambool - Cobden Road before Great Ocean Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	ID on Ziegler Parade before Great Ocean Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996.
	RD northbound after Warrnambool - Cobden Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1996
	Top: AD eastbound on Ziegler Parade before Great Ocean Road. Bottom: ID facing Ziegler Parade. Photos courtesy of Doug Blackwell, VicRoads - taken 1996.
	Princes Highway / Great Ocean Road Intersection Map
	Top: AD westbound on Princes Highway before Garabaldi Street. Note the later addition of the SR100 shield, coverplating the original arrow. Bottom: ID facing Garabaldi Street. SR100 topknots were common place along the Princes Highway section. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: ID eastbound on Princes Highway at Garabaldi Street. Bottom: RD westbound from Garabaldi Street. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Princes Highway / Hopkins Highway Intersection Map
	Top: AD before Warrnambool - Caramut Road in Warrnambool. Bottom: ID westbound on Princes Highway at Warrnambool - Caramut Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: ID at Princes Highway / Warrnambool - Caramut Road intersection. Bottom: Early 1970's AD southbound Warrnambool - Caramut Road before Princes Highway. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: AD before Warrnambool - Caramut Road on Princes Highway. Bottom: ID eastbound on Princes Highway at Warrnambool - Caramut Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: RD eastbound on Princes Highway from Hamilton - Port Fairy Road. Bottom: AD before Hamilton - Port Fairy Road in Port Fairy. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: AD before Hamilton - Port Fairy Road. Bottom: AD eastbound on Hamilton - Port Fairy Road before Princes Highway. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Intersection Direction sign (ID) on Princes Highway before Ettrick - Tyrendarra Road (Alternative National Route 1) in Tyrendarra. May 1997. Photo courtesy of Doug Blackwell, VicRoads.
	ID facing Ettrick - Tyrendarra Road. May 1997. Photo courtesy of Doug Blackwell, VicRoads.
	Advance Direction sign (AD) southbound on Ettrick - Tyrendarra Road before Princes Highway. May 1997. Photo courtesy of Doug Blackwell, VicRoads.
	Top: AD before Ettrick - Tyrendarra Road on Princes Highway. Note pre-emptive State Route 107 shield and no ALT NR1 shield. Bottom: Reassurance Direction sign (RD) eastbound from Ettrick - Tyrendarra Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	RD westbound from Ettrick - Tyrendarra Road. May 1997. Photo courtesy of Doug Blackwell, VicRoads.
	Top: AD before Keillers Beach Road. Bottom: ID at Keillers Beach Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: AD on Keillers Beach Road before Princes Highway. Bottom: ID facing Caledonian Hill Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: ID facing Keillers Beach Road. Note missing SR100 topknot. Bottom: AD on Caledonian Hill Road before Princes Highway. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	Princes Highway / Henty Highway Intersection Map
	AD eastbound on Henty Highway (Port Road) before Dutton Way. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	AD westbound on Dutton Way before Henty Highway. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	ID facing Dutton Way. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	ID facing southbound Henty Highway traffic at Dutton Way. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	ID facing northbound New Street traffic at Dutton Way. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: AD on Madeira Packet Road before Henty Highway (western intersection). Note no mention of SR100. Bottom: AD eastbound on Henty Highway before Madeira Packet Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	ID at Madeira Packet Road. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.
	Top: ID at Madeira Packet Road (western intersection). Bottom: ID at Madeira Packet Road. Photos courtesy of Doug Blackwell, VicRoads - taken 1997.
	AD before the terminus of State Route 100 and 107 at Cliff Street, near the port of Portland. Photo courtesy of Doug Blackwell, VicRoads - taken 1997.