The diagram details 3 different constructions for bridges. Looking from an overall perspective, it is readily apparent that concrete girder bridges are potentially the longest and tallest, while suspension bridges allow for the largest ships to pass underneath. Arch bridges are not as tall or long and admit only the smallest ships.
Looking first of all at arch bridges, the permissible height is no more than 100 meters and the length is typically under 200m. These bridges are built over lakes, have a conical shape, and cover the smallest ships. In contrast, concrete girder bridges can be an indeterminate length, though the maximum height is 300m. Concrete bridges are built over rivers and require a series of piers spaced under 200m apart to provide support, only allowing for the passage of medium-sized ships.
The modern suspension bridge can be between 400 and 2000m long and it is possible to build it over very deep seas as long as there is shallow land for pier structures to link at either end. The distance between piers enables the largest ships to traverse below safely.
The diagram
details
3
different
constructions for
bridges
. Looking from an
overall
perspective, it is
readily
apparent that concrete girder
bridges
are
potentially
the longest and tallest, while suspension
bridges
allow
for the largest ships to pass underneath. Arch
bridges
are not as tall or long and admit
only
the smallest ships.
Looking
first of all
at arch
bridges
, the permissible height is no more than 100 meters and the length is
typically
under
200m
. These
bridges
are built
over lakes, have a conical shape, and cover the smallest ships.
In contrast
, concrete girder
bridges
can be an indeterminate length, though the maximum height is
300m
. Concrete
bridges
are built
over rivers and require a series of piers spaced under
200m
apart to provide support,
only
allowing for the passage of medium-sized ships.
The modern suspension
bridge
can be between 400 and
2000m
long and it is possible to build it over
very
deep seas as long as there is shallow land for pier structures to link at either
end
. The distance between piers enables the largest ships to traverse below
safely
.