Traffic is being disrupted at the intersection of two main roads after a morning crash that injured a driver.

Just before 6am a crash was reported on the eastbound lane of Yanchep Beach Road and Wanneroo Road in Yanchep.

St John Ambulance responded and is treating a man in his 60s.

He is being taken to Joondalup Health Campus.

Drivers are also warned to drive cautiously after a crash on Roe Highway heading northbound after South Street in Willetton.

The left lanes have been blocked as crews work to clear the crash.