the construction of second carriageway. As part of the completion of second carriageway, was the previous B 207 on 21 August 2005 to Gremersdorf upgraded to the highway. Since 25 August 2008, the A 1 ended at the junction Heiligenhafen-Mitte. The 3.5 km section from Heiligenhafen-Mitte to behind Heiligenhafen-Ost was opened to the rest on 6 July 2012. The A 1 had to be closed in from 26 July 2006 to 1 August 2006, between the Hagen-West and Westhofener Cross in the direction of Bremen, because of serious heat damage. In the construction site area, the road surface became soft and ruts arose. The 30-year-old pavement has not been able to withstand the one-sided exposure to persistently high temperatures. In this refurbished section, the entire road surface was milled out and re-asphalted. The closing of the gap in the Eifel region was continued from the Rhineland-Palatinate side. In 2005, the highway was even extended by 2.5 km north of Daun to the makeshift port at Rengen. This disappeared in October 2010, when the A 1 was extended by another 3.5 km to the junction of Gerolstein. The most recent extension was on 31 May 2012, when 2.5 km continuation of the expressway were realized to the junction of Kelberg. The complete closing of the gap has not yet been realized due to faltering planning due to environmental guidelines. New construction There were still some new construction points: as part of the six-lane expansion from Hamburg to Bremen, the new junction Elsdorf was created. At the end of 2010, the junction for the airport Münster / Osnabruck (Exit 75) was released. At the same time as construction, the motorway in the area of the new connection point has already been dimensioned for the future six-lane expansion. Another new junction was built south of the intersection Münster-Süd in the course of six-lane expansion in 2014. It bears the name Münster-Hiltrup (Exit 79A). Features The A 1 has at the junction of Saarbrücken-Von de Heydt (exit 148) in the direction of Trier, a bus stop for the two parts, Saarbrücken Cherschheck and Von der Heydt. Today, the bus stop is only used for rail replacement traffic of the parallel city railway line 1, of the Saarbahn, which has a stop there for both Saarbrücken districts beside the motorway ramp, and the call collection exit 168, Von der Heydt to Heinrichshaus. Also at the