Haseltalbrücke, Highway bridge in Bischbrunn, Germany.

The Haseltalbrücke is a prestressed concrete bridge crossing a valley near Bischbrunn that links two sections of the A3 autobahn. The structure spans the terrain with multiple support pillars and carries daily traffic flows above the landscape below.

The bridge opened in 2011 as part of regional infrastructure development along the A3. Its completion helped improve traffic flow and modernize the highway connection in the area.

The Haseltalbrücke crosses the Haslochbach valley between the Rohrbrunn and Marktheidenfeld junctions. Its name comes from the Haseltal it spans. The 2008–2011 replacement was built by the Adam Hörnig Baugesellschaft, and the old steel superstructure was cut into pieces up to 95 m long and 800 t heavy in the valley floor before removal.

Access to the bridge is only via the A3 autobahn since it is designed for through traffic. Pedestrians and cyclists cannot use the crossing.

The 2011 replacement deck was built by incremental launching, not cast in place on falsework: the first deck reached the far abutment on 11 September 2009. The old 1961 steel bridge, weighing 4,735 tonnes, was then cut into segments up to 95 m long and 800 tonnes, lowered by strand jacks, and its six pier pairs were blown up on 14 April, 5 May and 21 July 2010.