At 1,830 meters, the Mintarder Ruhrtalbrücke ("Mintarder Bridge") is the longest steel road bridge in Germany. It is located in the Mülheim district of Mintard, which gives it its name, and runs in an east-west direction as part of the federal autobahn 52. Planning for this project, which was unique at the time, began in 1960. Construction began in 1963. In mid-1966 the bridge was completely stretched over the Ruhr Valley.
The building rests on 18 hollow pillars. The highest roadway height is 65 m above the Ruhr, the bridge width between the railings is 27.3 m. The total bridge area is 49,176 square meters. The total span of the 19-span bridge is 1,800.0 m with spans of 66.6 m - 86.4 m - 4 × 90.0 m - 4 × 108.0 m - 126.0 m - 2 × 108.0 m – 4 × 90.0 m – 86.4 m – 66.6 m. With a horizontal radius of curvature of 3,000 m, the structure only has expansion joints at the two abutments. The superstructure consists of a single-cell steel box girder that is constantly 4.5 m high and 7.5 m wide. The longitudinal gradient is 0.4 percent in the direction of Düsseldorf, the transverse gradient is 1.5 percent. The construction costs amounted to the equivalent of around twenty million euros.