The Jagdbergtunnel is a 3.074 km tunnel on

Bundesautobahn 4 is an autobahn that crosses Germany in a west–east direction. The western segment has a length of , the part in the east is long. Works to continue the A 4 are in progress, but currently no plans exist to fill the gap completely. T ...

, west of the town of

Jena Jena () is a German city and the second largest city in Thuringia. Together with the nearby cities of Erfurt and Weimar, it forms the central metropolitan area of Thuringia with approximately 500,000 inhabitants, while the city itself has a popu ...

, in

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

. Construction began in 2008 and lasted until 2014, when the tunnel opened. The tunnel was built to expand the capacity of the Autobahn, while protecting Leutratal nature reserve, an important site for European orchids. It is one of the ten longest road tunnels in Germany.

References

Road tunnels in Germany Buildings and structures in Jena Roads in Thuringia 2014 establishments in Germany Tunnels completed in 2014 {{Thuringia-struct-stub