The Margaret Hunt Hill Bridge is a bridge in Dallas, Texas, that spans the Trinity River. The bridge is named for Margaret Hunt Hill, an heiress and philanthropist. The bridge was constructed as part of the Trinity River Project. Designed by Santiago Calatrava, it is one of three such bridges planned to be built over the Trinity; the second, the Margaret McDermott Bridge, is completed; the third cancelled. The span parallels the Ronald Kirk Bridge, a walking bridge that was previously the Continental Avenue bridge.