For the second time this week, concrete has fallen from the Gardiner Expressway in Toronto.
Police say it happened on Parkside Drive near Lake Shore Boulevard West.
There are no reports of any injuries or damage.
Earlier this week, a chunk of the expressway fell onto Lake Shore Boulevard East near Jarvis Street.
There were no injuries or damage in that case either but part of the road was closed for Monday's afternoon rush hour while crews investigated.