Construction of the Union Square/Market Street station required closing Stockton Street just north of Market, which depressed traffic to retailers in Union Square. During the excavation, workers accidentally breached a water main in July 2014, causing basement-level flooding in shops along Geary between Stockton and Grant. The ensuing cleanup took several days and required a few businesses to keep stores closed. Since Stockton Street has been closed between Geary and Ellis, starting in 2014, construction is suspended in December and the area is transformed into a pedestrian plaza known as "Winter Walk". Some have called for Winter Walk to be made a permanent year-round fixture, but notable opposition included Rose Pak, who wanted to retain Stockton as a link from Market to Chinatown.