Which Calatrava bridge in Dallas is named after a philanthropist?

The Calatrava bridge in Dallas named after a philanthropist is the Margaret Hunt Hill Bridge.

The cable-stayed bridge crosses the Trinity River and connects downtown Dallas with West Dallas. Santiago Calatrava designed it as the first of three planned Trinity River bridges, giving the Dallas skyline a distinctive white steel arch and fan of cables.

Its namesake, Margaret Hunt Hill, was a Dallas heiress and philanthropist from the prominent Hunt family. She supported civic, historical, educational, and charitable causes, including the Dallas County Heritage Society and restoration work at her alma mater, Mary Baldwin College.

The bridge opened on March 29, 2012. It is sometimes confused with the nearby Margaret McDermott Bridge, another Calatrava-designed Trinity River crossing, or the Ronald Kirk Bridge, a pedestrian bridge that parallels it. Those are separate structures, so the stored answer is the precise one.