Length:

119 km

Termini:

Northern: Princes Hwy (NR1), Kingston SE

Southern: Princes Hwy (NR1), Millicent

Suburbs, Towns & Localities Along Route:

Kingston SE, Robe, Beachport and Millicent

Current: B101

Former: 1

General Information:

Alternative National Route 1 was a collection of separate roads in different parts of South Australia that paralleled National Route 1 or offered a different route to the same destinations, but in the case of the Limestone Coast section, the route of ALT-NR1 between Kingston SE and Millicent is the pre-1933 Princes Hwy routing. The route is rural highway standard, generally with 2 lanes in each direction, mostly servicing tourist areas and passing through mostly residential, rural and commercial zones.

Southern Ports Highway:

1933: Princes Highway moved to new alignment between Millicent and Kingston SE to the east of the existing highway. ¹

1978: Introduction of ALT-NR1. ¹

1998: ALT-NR1 decommissioned and replaced by B101 with the implementation of alphanumeric route numbering.

Kingston SE to Millicent

Reassurance Directional Sign:

Distance sign at Robe, December 2001.

Image © Jamie Scuglia

Click or tap here for Alternative National Route 1 between Murray Bridge and Callington