Q :- Which are the categories of bridges in Railways on the basis of consideration of water way ?
Ans :- There are four categories of Railway bridges based on water way basis.
1.Important Bridges:-
Important Bridge is one which has a very large size of waterway. i.e. the bridge having total area of water way of more than 1000 sq. metres or has a linear water way of 300 metres.
Major Bridge is one which has a total linear water way of 18 metres or which has a clear opening of 12 metres or more.
3.Minor Bridges:-
Minor Bridges are those bridges having linear water way of less than 12 metres in case of single span bridge and less than 18 metres in case of multi span bridges.
4.Culverts:-
A very small bridge which has span less than 6 metres is called culvert.
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