D5 motorway (Czech Republic)

D5 motorway () is a highway in the Czech Republic. It runs from Prague through Plzeň into Germany. D5 is long; a bypass of Pilsen includes the Valík Tunnel and the bridge over the River Úhlava. Section between Prague and Beroun is planned to be improved to three lanes in each direction.
Construction.
Construction of the D5 began in 1976, with the first segment opening in 1985 and the final segment being completed in 2006.
European route.
In Germany, it continues as German autobahn A6 west to the border with France. The D5 is part of European route E50. All of D5 is the Czech part of "Via Carolina", the motorway from Nuremberg to Prague.
Tunnel Valík.
Very important part of the D5 highway is the tunnel Valík bypassing the city of Pilsen. The technology inside of the tunnel is controlled by a Reliance SCADA system The tunnel was opened on October 6, 2006.