Authorities are working to identify a driver killed in an afternoon crash involving a car and truck.

The vehicles collided on Portland-Nelson Rd in Mount Richmond, an area of southwest Victoria about 30 minutes from the SA border, just before 5pm on Thursday.

“The yet-to-be formally identified driver of the vehicle died at the scene,” Victoria Police said.

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The truck driver was not injured.

A stretch of Portland-Nelson Rd between Spring Rd and Stanleys Rd remains closed in both directions on Thursday night following the serious collision.

Drivers have been told to consider detouring via Kentbruck Rd, Inkpot Rd, Heaths Rd and Blacks Rd, “although this route may not be suitable for all vehicles”.

Authorities are working now to piece together exactly what triggered the state’s latest road death.

So far in 2025, 176 people have been killed on state roads, a 9 per cent increase on the same time last year.

Anyone with information should contact Crime Stoppers.