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Mark Nootbaar / 90.5 WESA

A Pittsburgh bridge is closing over the weekend to repair damage caused by a construction fire last year.

Traffic on the Liberty Bridge will be closed in both directions from 3 p.m. Saturday to 11 a.m. Sunday.

The northbound side of the Liberty Tunnel will also be closed. All traffic will be detoured.

The Pittsburgh Post-Gazette reports crews will also repair an expansion joint that crosses the full width of the bridge.

Noah Brode / 90.5 WESA

Local union leaders gathered in Market Square on Monday with the families of workers who have died on the job in Allegheny County, honoring them with a Workers' Memorial Day.

According to the event's organizers, 12 people died on the job in Allegheny County from May 2012 to the current month.