The Graham Farmer Freeway tunnel was closed and traffic was brought to a standstill after a man jumped onto the road on Monday morning.

The man jumped onto the roadway just after 11am, and WA Police closed the tunnel eastbound towards the Mitchell Freeway in Leederville as a safety precaution.

The Graham Farmer Freeway tunnel was closed on Monday. Credit:ABC Perth

The man was able to avoid injury but was taken to Royal Perth Hospital by St John Ambulance for assessment, according to police.

A Main Roads WA spokesman asked those in the area to exercise extreme caution and seek alternative routes while traffic management cleared the scene.

The tunnel reopened just before 12.30pm.