てっきょう鉄橋tekkyou
1.
A type of bridge primarily constructed using iron materials, typically designed to support heavy loads and spans over obstacles like rivers or valleys.
2.
A bridge specifically intended for the passage of trains, often featuring robust engineering to accommodate the dynamics of rail transport.
3.
A structure made predominantly of iron, serving as a thoroughfare for vehicular or pedestrian traffic, but often associated with railway use in its most common context.
Example:
その川には鉄橋がすでに建設中だ。