European route E 451 is a Class B road part of the International E-road network. The E451 is at least kilometres (mi) long. It is the only route that goes in Germany. The new route between E42 and E40 is expected to be finished by 2013. * The newest route is between 18 and 23 km (8.7 and 11.4 miles) above interchanges between E40 and E42 are more possible to extend the route to 111.3 or 116.3 km (71.2 or 76.6 miles). Details * New route is at construction (it began in October 2008 and finishing in 2013).