Statistics:

Length:
1333 km (Gwynneville to Yallah: 19 km)
Termini:
Northern: Northern: Pacific Mwy (M1), Tweed Heads, at the NSW / QLD Border
Southern: Southern: Princes Hwy (A1), Timbillica, at the NSW / VIC Border
Suburbs, Towns & Localities Along Route:
Gwynneville, Keiraville, West Wollongong, Mangerton, Mt St Thomas, Figtree, Unanderra, Berkeley, Kanahooka, Kembla Grange, Dapto and Yallah

Route Numbering:

Current: M1
Former: 1 F6
Road Authority Internal Classification: 1
6006 (Yallah to Gwynneville)

General Information:

M1 / A1 is the principal coastal route through New South Wales, and forms part of the circumferential route around Australia.

The route varies greatly along its length and includes sections of rural highway, urban arterial road, divided rural highway and also motorway. The route also features several tunnels, located in the inner east, inner south and lower northern suburbs of Sydney and at Yelgun and Tweed Heads, at the northern end of the route in NSW. The route passes through forest, rural, residential, commercial and industrial areas.

Princes Motorway:

The Princes Motorway started life as the Southern Expressway (later Freeway) and also Mount Ousley Road, and runs between Waterfall, bypassing Wollongong and ending at Kiama, in the Illawarra's southern suburbs. It is the main route between Sydney and Wollongong, and crosses the Illawarra Escarpment to the narrow coastal strip on which most of the Illawarra suburbs are built.

History:

Princes Motorway:
March 1964: Mount Ousley Road was connected to the now former F6 Freeway at Gwynneville.

Yallah to Gwynneville

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Intersection Directional Sign:

ID sign in the interchange of Kanahooka Rd and Princes Mwy (M1) at Brownsville, September 2019.

Image © Paul Rands

Gwynneville to Yallah

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Advance Directional Sign:

AD sign on Princes Hwy at West Wollongong, approaching Princes Mwy (M1), September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on Princes Mwy (M1) at Mangerton approaching Masters Rd, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on Princes Mwy (M1) at Springhill approaching Five Islands Rd, September 2019.

Image © Paul Rands

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Reassurance Directional Sign:

Distance sign at Berkeley after Five Islands Rd interchange, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign at Berkeley approaching Northcliffe Dr interchange, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign at Berkeley approaching Northcliffe Dr interchange, September 2019.

Image © Paul Rands

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Northcliffe Drive:

Princes Mwy (M1) at the Northcliffe Dr interchange at Berkeley. This was once a terminating point of the motorway, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on Northcliffe Dr at Berkeley approaching the Princes Mwy (M1) interchange, August 2013.

Image © Paul Rands

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Intersection Directional Sign:

ID sign on the interchange of Northcliffe Dr and Princes Mwy (M1) at Berkeley, August 2013.

Image © Paul Rands

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Supplemental Advance Directional Sign:

Supplemental AD sign on Princes Mwy (M1) at Berkeley approaching Kanahooka Rd, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on Princes Mwy (M1) at Kanahooka approaching Kanahooka Rd, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on Princes Mwy (M1) at Kanahooka approaching Kanahooka Rd, September 2019.

Image © Paul Rands

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Kanahooka Road:

Princes Mwy (M1) at Kanahooka at the interchange with Kanahooka Rd, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign on the off ramp to Kanahooka Rd at Kanahooka, September 2019.

Image © Paul Rands

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Intersection Directional Sign:

ID sign facing the off ramp to Kanahooka Rd at Kanahooka, September 2019.

Image © Paul Rands

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Intersection Directional Sign:

ID sign facing the off ramp to Kanahooka Rd at Kanahooka, September 2019.

Image © Paul Rands

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Advance Directional Sign:

AD sign at Dapto approaching Fowlers Rd, December 2013.

Image © Michael Greenslade

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Intersection Directional Sign:

ID sign at the corner of Princes Hwy and Fowlers Rd, Dapto for access to Princes Mwy (M1), June 2012.

Image © Paul Rands

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Princes Highway Interchange:

Princes Mwy (M1) as it crosses Princes Hwy at Dapto, December 2013. The Princes Mwy has since been extended into the vegetated reservation in the middle of the shot.

Image © Michael Greenslade

Click or tap here for the continuation of M1 between Yallah and Gerringong
Click or tap here for the continuation of M1 between Waterfall and Gwynneville
1 NSW Government, Transport for NSW, Schedule of Classified Roads And State and Regional Roads, July 2022.