Sinntalbrücke, Steel girder bridge in Bad Brückenau, Germany.
Sinntalbrücke is a steel girder bridge near Bad Brückenau that carries traffic across the Sinn Valley as part of the A7 motorway. The structure spans over 700 meters and relies on seven pairs of substantial pillars to support dual carriageways in both directions, with an additional emergency lane.
Construction of the present bridge began in 2009 to replace the earlier 1960s version that had become worn from heavy traffic. The new design reflected modern engineering standards needed for contemporary highway demands.
The bridge shapes how the valley landscape looks today and connects people between two important regions. Travelers crossing it experience a moment of transition between different parts of Germany.
The bridge carries heavy traffic smoothly with two lanes plus an emergency strip on each side for handling different vehicle types. Access to the structure is only possible by vehicle, so visitors should plan accordingly for observation or photography stops at nearby viewpoints.
During installation, engineers used soap as a lubricant to slide the massive steel framework weighing thousands of tons into its final position. This unexpected method allowed precise and controlled movement of the entire superstructure across a considerable distance.
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