Unions representing Golden Gate Bridge workers to strike Friday

SAN FRANCISCO (KGO) -- A coalition of more than a dozen unions representing Golden Gate Bridge workers, plan to walk off the job at the end of the week.

The unions will announce Thursday that they'll be hitting the picket lines Friday. And this time they warn their one-day strike will affect your commute to San Francisco from Marin County.

Last week, the bridge district's machinists union walked off the job for one day, with no impact on traffic.