A fast-food chain known for its ButterBurgers, cheese curds, and shakes and ice cream is making plans to build in the Walmart shopping center on Market Street by next year. (Courtesy Culver’s)WILMINGTON — A fast-food chain known for its ButterBurgers, cheese curds, and shakes and ice cream is making plans to build in the Walmart shopping center on Market Street by next year. Today, more than 1,000 restaurants in 26 states; in North Carolina alone, 18 locations exist — in High Point, Burlington, Selma, Sanford, Elkins and others. Fast-food restaurants are included. The restaurant’s ice cream is a custard base and cheese curds consist of bite-sized fried nuggets of Wisconsin cheddar.