The Theodor-Heuss-Rhine River Bridge (Theodor-Heuss-Rheinbrücke) also known as the Autobahnbrücke Frankenthal (Autobahn Bridge, Frankenthal) is a bridge that spans the Rhine River along Autobahn 6 and connects the regions of Rhineland-Palatinate with Baden-Wuerttemberg. The four-lane bridge crosses the upper Rhine north of the cities of Ludwigshafen and Mannheim in an east-west direction on the motorway connecting Saarbrücken, Kaiserslautern, Mannheim, and Viernheim. The length of the entire span, which consists of the main river span and two land spans, is over a kilometer long.