There is not too much difficult to understand the Difference between culvert and bridge. Here I have described in an easy way so that you can get the full concept easily. So, Let’s Start.
Drainage structure which facilitates a communication pathway to carry a road or railway traffic across an obstacle with or without water is called a bridge.
The route of communication may be railways, roadways, cycle tracks, sidewalks, and the obstacle may be in the form of a river, stream, valley, channel, road, railway track, etc.
Culvert is a small bridge having a total length of 6 m or less than 6 m between the faces of abutments. In other words, a culvert is a tunnel structure that permits running water to pass under a roadway or railway.
This type of culvert is a permanent drainage structure that is mainly made to carry a roadway or railway track over small streams or canals.
Difference between culvert and bridge
The purpose of both bridges and culvert is to provide a transportation route over obstructions, which seems the same, but the span length differentiates between the two structures.
Some important Difference between culvert and bridge are given below:
|1.||A bridge is a passage of transportation over a large body of water or physical obstruction.||A culvert is generally a tunnel like structure that permits water to pass under a roadway or railway.|
|2.||The basic components of a bridge are superstructure, substructure and deck.||The components of culvert are comparatively simpler and include concrete boxes or cells, pipe, a top deck or slab and supporting parts.|
|3.||Bridges are constructed at more than 20 feet height.||Culverts are built at less than 20 feet height.|
|4.||The span of bridge ranges from 6 m to 120 m.||The length of culvert is not more than 6 m.|
|5.||The supporting structures of a bridges are piers and abutments.||Culverts are usually embedded in the soil. The soil bears the major portion of the culvert load.|
|6.||The structure and design of a bridge are complex, hence its construction requires a substantial budget.||The construction of a culvert requires a low budget.|
|7.||A bridge have no floor.||A culvert is an enveloping structure consists of two sides, a roof and a floor.|
|8.||Bridges are constructed at the site or pre-constructed in smaller parts.||Culverts can be pre-constructed or built at the site.|
|9.||A bridge construction requires a lot of time and manpower.||Construction of culverts requires less time and labour because it is simple in structure and design.|
|10.||It provides an easier route of transportation that saves time and reduces distance.||It prevents water logging, flood and erosion and allows water to flow.|
|11.||It is built over a body of water that is large and has variable flow.||It is constructed when water needs to be conveyed through tunnels or channels under a roadway.|
|12.||Bridges can resists heavy and speeding vehicles.||Some culverts are unsuitable for high velocity vehicles that have sharp corners like box culverts.|