km-long section to the junction Würzburg-Heidingsfeld took place from mid-2007 to December 2009. In the direction of travel in Frankfurt, there is a 2.0 km-long lane in the incline area. The most elaborate section lies between the junctions Würzburg-Heidingsfeld and Würzburg / Randersacker and is 5.4 km long. In May 2008, after contradictions by the city of Würzburg, a new plan approval procedure was initiated, which was concluded with the plan approval decision of 17 December 2009. Afterwards, the valley bridge Heidingsfeld should be lowered and the district Heuchelhof underpassed with the Katzenberg tunnel. It is expected to have a construction time of about five and a half years. An action was brought against the decision, which the Federal Administrative Court dismissed by judgment of 3 March 2011. The preparatory work began in September 2012, the construction work in July 2014. By December 2017, the first phase of construction, consisting of the northern directional lane, the future direction Frankfurt, to be completed. Afterwards, the existing bridge will be demolished and the 2nd construction phase started. Completion with the release of both lanes is planned for the end of 2019. The subsequent 2.0 km section with the construction of the Randersacker Main Bridge and the extension of the Randersacker junction was started in 2007 and completed in July 2011. The six-lane traffic release took place together with the eastern adjacent section. In Fahrtrichtung Würzburg wurde im Steigungsbereich des Spessartaufstiegs ein zusätzlicher vierter Fahrstreifen errichtet. The last part of the track construction is long and ends at the intersection Biebelried. From June 2007 to December 2009, the early, partial conversion of the junction Rottendorf was carried out. The start of construction for the actual expansion was in the fall of 2009. The first section to the junction Rottendorf has been expanded since March 2012. Since then, four lanes have been usable here in the gradient area on the Nuremberg directional road. The construction work for the second section of the junction Rottendorf to the intersection Biebelried were completed on 12 October 2012. Biebelried to Fürth / Erlangen The six-lane expansion of the route between the Biebelried interchange and the Fürth / Erlangen intersection is classified as an ongoing project in the new BVWP 2030 and is to be implemented via a public-private partnership. Planning took place during the lifetime of the FTIP 2003, with the section west of the AS key field