European route E 451 is a Class B road part of the International E-road network. The E451 is at least long.
Route
E40, E4, E44 Giessen E35, E42 Frankfurt E50 Mannheim
E-routes The newest route is between above interchanges between E40 and E42 are more possible to extend the route to .
Details New route is at construction (it began in October 2008 and finishing in 2013).
References
External links UN Economic Commission for Europe: Overall Map of E-road Network (2007)