| Published in Tourist Info / Highways |
Bundesautobahn 111, Germany
Map of Bundesautobahn 111, Germany. 
Bundesautobahn 111 (Federal Motorway 111, short form Autobahn 111, abbreviated as BAB 111 or A 111) is an autobahn in Germany. It connects the Berliner Stadtring (A 100) with the Berliner Ring (A 10). Before reunification, it was called the A 11.
The A 111 was used from 31 December 1987 to German reunification in 1990 for transit traffic through the GDR to Hamburg and Malmö (Sweden) with the border crossing Heiligensee / Stolpe.
From 1975 until reunification, the highway was designated as A 11. As part of the numbering of motorways after 1990 in East Germany then the new number A 111 was assigned.
The tunnel Tegel Airport Berlin, shorter tunnel Tegel Airport (TFT), was taken in 1979 in the course of the construction of the A 111 in operation. The length of the tunnel tube east (north direction) is 967 m, the tunnel tube west (south direction) extends over a length of 878 m.
The two separate tunnels were built in an open construction in a pit with groundwater lowering and then covered, so that the runway of the airport is located above.
The outer wall thicknesses are 80 cm, the middle wall was designed with a thickness of 60 cm. The base plate has a control plate thickness of 1.20 m. The thickness of the ceiling slab is on average one meter. The inside width within the two tunnel tubes is approx. 10.50 m, the clear height was designed with 5.50 m and with extensions at a minimum of 4.81 m.
Due to the structural condition is expected from the year 2021 a thorough renovation of the Berlin section of the A 111 required. In addition to the renewal of the carriageway, this also includes the refurbishment of the Tunnel Beyschlagsiedlung, Tegel Forest Office and Tegel town center as well as the replacement of the discontinued bridges in this section of the route.
Length: 17 km (11 mi)
Junctions
North end: A 10 in Velten
South end: A 100 in Berlin
States: Berlin
Source
• www.wikipedia.org
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