|To:||Austrian Border near Füssen|
|Distance:||961 km (597.2 miles)|
|Meets:||E45, A210, A215, A23, A261, A1, A27, A352, A37, A2, A39, A49, A44, A4, A5, A66, A70, A3, A6, A8, A96, A980, 179 (Austria)|
|Route outline (key)|
The A7 in Germany is the longest motorway in Europe at a length of 961 km (597.2 miles). It stretches from the Danish to the Austrian border and passes the cities of Flensburg, Hamburg, Hannover, Kassel, Würzburg and Ulm on its way.
Most of the northern half of the A 7 is part of the HaFraBa (an acronym of Hansestädte-Frankfurt-Basel). The HaFraBa was originally a road scheme proposed by private initiative in the 1920s. It became partly reality one decade later when large-scale motorway construction started in Germany. The first section of 77 km opened in 1937 and a second one of 28 km one year later. Soon after World War II motorway construction resumed and by 1962 a continuous motorway linked Hamburg and Frankfurt(Main). Modern day road numbering introduced in the mid 1970s, however, doesn't follow the HaFraBa. This entails two Totsos. The A 7 joins the HaFraBa south of Hamburg at Horst junction and leaves it again in east Hessia at Hattenbach junction.
Notable river crossings
The A 7 crosses river Elbe at Hamburg. Allowing for sea ships to reach the port of Hamburg the Elbtunnel was built instead of a bridge. The original three tubes of the tunnel are 3325 m long and were opened in 1975. A forth tube was added in 2002. Each tube is two lanes wide while the newest one was additionally equipped with a hard shoulder.