Bridge Engineering – Components of Bridge Structures
A bridge is a structure providing passage over an obstacle without closing the way beneath. The required passage may be for a road, a railway, pedestrians, a canal or a pipeline. The obstacle to be crossed may be a river, a road, railway or a valley.

Classification of Bridges
Classification of Bridges (According to form (or) type of superstructures)
- Slab bridge
- Beam bridge
- Truss bridge
- Arch bridge
- Cable stayed (or )suspended bridge
Classification of bridges (According to material of construction of superstructure)
- Timber bridge
- Concrete bridge
- Stone bridge
- R.C.C bridge
- Steel bridge
- P.C.C bridge
- Composite bridge
- Aluminum bridge

Classification of bridges (According to inter-span relationship)
- Simply supported bridge
- Cantilever bridge
- Continuous bridge
Classification of bridges (According to the position of the bridge floor relative to superstructures)
- Deck through bridge
- Half through or suspension bridge
Classification according to method of connection of different part of superstructures
- Pinned connection bridge
- Riveted connection bridge
- Welded connection bridge

According to length of bridge
- Culvert bridge(less than 6 m)
- Minor bridge(less than 6 m-60m)
- Major bridge(more than 60 m)
- Long span bridge(more than 120 m)
According to function
- Aqueduct bridge(canal over a river)
- Viaduct(road or railway over a valley or river)
- Pedestrian bridge
- Highway bridge
- Railway bridge
- Road-cum-rail or pipe line bridge
Check the ppt
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