Bollingstedt

54°37'24"N 009°26'30"E

runway: 17/35 - 2400x..m - concrete

Bollingstedt Highway strip (german: Autobahn-Behelfslandeplatz A7 Bollingstedt, also known as Autobahn Notlandeplatz I/2 or NLP I/2) was a piece of highway (german: Autobahn) in the Autobahn A7, 350 kilometers northwest of Berlin.
Because NATO planners feared a Soviet surprise attack might render NATO airfields unusable a number of preplanned emergency airstrips were constructed in Germany's extensive Autobahn network. At a glance they would appear to be normal stretches of Autobahn, but they were rapidly convertible into runways, capable of handling any NATO aircraft. Safety guiderails could be dismantled quikly and car rest stops were easily converted into aircraft platforms, one on the south side and one to the north. Also they were provided with prepositioned communications lines, fuel supply and electricity.
One of those emergency strips (the seventh) was located a few kilometers south of Flensburg. It was of a concrete construction like any German highway or runway, but it lacked one major thing found at airports: an antiskid surface.
It also featured one thing not normally found at the end (or begin) of a runway: a 7,5 meter tall bridge crossing the highway on the northern end. The whole airfield was supported by nearby Eggebeck air base.

With the Cold War over the German Government decided in the late 1990s that the NLPs were no longer necessary and ordered them to be converted to normal highways. The NLP is easily recognisable however, as the aircraft parkings are still more or less in their original shape.

NLP Tarp-Schuby in 2000 (Google Earth)