Construction began on Friday of the first of three bridges designed by Santiago Calatrava for the city of Dallas. The US$93 million Margaret Hunt Hill Bridge - formerly known as the Woodall Rodgers Bridge - will have a 365m-long cable-stayed main span supported from a transverse arch standing as tall as a 40-storey building. The bridges are part of the Trinity River Corridor project which also includes aspects such as enhanced flood protection and recreational amenities for the city.