12/25/2012 10:10 EST | Updated 02/24/2013 05:12 EST

Jacques-Cartier Bridge closed due to fallen metal structure

Montreal's Jacques-Cartier Bridge will be closed for an undetermined period of time after a large metal structure fell Tuesday morning.

According to Quebec provincial police, a truck hit a road sign which led to the structure's partial collapse.

The metal beam is used to hold lane signs and direct drivers into the proper lanes during traffic hours.

More to come.