The most elaborate structure in this section was the then approximately 500 m long and 60 m high Lahntalbrücke. The 41.5 km long gap between Limburg and Dierdorf took place on 15 June 1940. The construction of the section south of the Wiesbadener cross with the Main Bridge between Raunheim and Eddersheim was started in 1938, but had to be discontinued in early 1943. The section from Erlangen to the Nuremberg junction was completed in 1941, partly in one lane. In 1937, planning for the motorway section from Nuremberg via Regensburg to Passau was begun. In the area between Nuremberg and Oberpfraundorf, however, a different route was chosen than the later built. The original route led over the area of the enlarged military training area Hohenfels after the Second World War. Also, in contrast to today running south of the city A 3 Deggendorf north should be bypassed. After 1939 already in some sections on the Franconian Alb and Wörth on the Danube and Deggendorf with earthworks and bridge construction work was started, they stopped the work, as on the northern section, 1942 due to the war. In the course of this work, the construction of a Danube bridge near Regensburg was started. After the war, in 1958 with the continuation of construction of the line Emmerich-Oberhausen ("Holland Line") started. In 1961, the 17,5 km long section from the cross Oberhausen to Wesel was completed. Already two years earlier, in 1959, the construction of the "Zubringers Oberhausen" as the southern extension of the road to the B 223 (today's A 516) began. Also the 7.2 km long section between the border crossing Elten and Emmerich has already been built. This was then in an area that was still under Dutch administration until 1962, the construction was in collaboration with the Dutch Road Administration. The road cross section, however, corresponded to the German standard. The construction work was completed in 1962 and completed the section. In 1963, both the "Oberhausen connection" south of the Oberhausen cross and the section between Wesel and Hamminkeln were released. The total distance from Oberhausen to the Dutch border was completed in 1965. In June 1950, the construction work on the motorway south of Wiesbaden was resumed. The completion of the 3.5 km section to Weilbach was 1951, the following 17.4 km to Frankfurt-South were inaugurated on 10 July 1956. This was near the Frankfurt Rhein-Main