how tall is this ?

The Millau viaduct  is part of the new E11 expressway connecting Paris and Barcelona and  the overall height will be an impressive 336  meters, making this the highest bridge in  the world. 

The Millau viaduct  is part of the new E11 expressway connecting Paris and Barcelona and  the overall height will be an impressive 336  meters, making this the highest bridge in  the world.