Two separate crashes caused in-bound delays on the Monash Freeway on Wednesday morning.

The High Street entry ramp was closed due to a crash involving two trucks and a car.

Later, two left lanes of the Monash Freeway were closed shortly before Stud Road due to a crash involving up to 11 vehicles about 5.40am.

The condition of the drivers is not yet known.

Delays impacted the Monash and South Gippsland freeways.