The proposal for a new school in Bradford, approved by the Hunking Building Committee late last month, calls for a two-story building, with younger students on one floor and older students on the other. The school will have two wings, with the cafeteria, gymnasium, administrative offices, and media center in the center of the structure. Officials have asked the Massachusetts School Building Authority to help the city build a $61.5 million school that would serve 1,005 students in kindergarten through Grade 8. The new school would replace the aging Caleb Dustin Hunking Middle School, a portion of which was closed in late 2011 due to concerns about the structural integrity of the building’s foundation. More than 400 heavy-duty steel support columns were installed to shore up the building, but those repairs are only a temporary fix. If state officials approve the proposal, Haverhill taxpayers would be asked to shoulder roughly $24 million of the school’s construction costs with the state covering the balance. The new school would be built on playing fields adjacent to the existing Hunking School, off South Main Street.