It continues in a south-westerly direction on its own alignment through Edenhope, before it crosses the interstate border into South Australia and eventually terminates at the intersection with Riddoch Highway in Naracoorte.

[2] The highway was extended a further 90km east (along the former Bendigo–St Arnaud Road[10]) to Marong, just outside Bendigo, in the late 1990s.

A new bridge over Loddon River in Newbridge (on the then-Bendigo-St Arnaud Road) was opened in 1996, replacing an older, flood-prone structure that could no longer be maintained in a cost-effective manner, at a cost of $1.4 million.

[10] Wimmera Highway was signed as State Route 130 between Naracoorte and St Arnaud in 1986; with Victoria's conversion to the newer alphanumeric system in the late 1990s, this was replaced by route C240 between Naracoorte and Marong.

Subsequent road upgrades allowed the Victorian section to be reallocated route B240 in 2003.