The Boston University Bridge, which spans the Charles River between Boston and Cambridge, Massachusetts, is indeed renowned for its unique multi-layered transportation alignment.
This bridge allows for an extraordinary scenario that occurs very rarely anywhere else in the world:
A boat can sail on the Charles River (bottom layer).
Above the river, there is a rail bridge used by commuter trains—originally for the Grand Junction Railroad.
Above or beside that structure, there is a road bridge that carries vehicular traffic.
And due to the proximity of Logan International Airport and the air corridors over the Charles River, planes often fly overhead, effectively completing the stack of transportation.
While the claim that all of this occurs simultaneously is a bit dramatized, the infrastructure and air traffic patterns do allow for this layered effect to be observable.
It is not the only place on Earth with such stacking, but it is one of the few places where it’s possible, especially with regular commercial air traffic flying low overhead during landing approaches
This bridge allows for an extraordinary scenario that occurs very rarely anywhere else in the world:
A boat can sail on the Charles River (bottom layer).
Above the river, there is a rail bridge used by commuter trains—originally for the Grand Junction Railroad.
Above or beside that structure, there is a road bridge that carries vehicular traffic.
And due to the proximity of Logan International Airport and the air corridors over the Charles River, planes often fly overhead, effectively completing the stack of transportation.
While the claim that all of this occurs simultaneously is a bit dramatized, the infrastructure and air traffic patterns do allow for this layered effect to be observable.
It is not the only place on Earth with such stacking, but it is one of the few places where it’s possible, especially with regular commercial air traffic flying low overhead during landing approaches
The Boston University Bridge, which spans the Charles River between Boston and Cambridge, Massachusetts, is indeed renowned for its unique multi-layered transportation alignment.
This bridge allows for an extraordinary scenario that occurs very rarely anywhere else in the world:
A boat can sail on the Charles River (bottom layer).
Above the river, there is a rail bridge used by commuter trains—originally for the Grand Junction Railroad.
Above or beside that structure, there is a road bridge that carries vehicular traffic.
And due to the proximity of Logan International Airport and the air corridors over the Charles River, planes often fly overhead, effectively completing the stack of transportation.
While the claim that all of this occurs simultaneously is a bit dramatized, the infrastructure and air traffic patterns do allow for this layered effect to be observable.
It is not the only place on Earth with such stacking, but it is one of the few places where it’s possible, especially with regular commercial air traffic flying low overhead during landing approaches
