Components Of Bridge | Parts Of Bridge

Parts Of Bridge

There are different types of bridges depending upon the specific physical and design scope requirements. In this article we will discuss components and parts of bridge.

Components Of Bridge

The various parts and components of a bridge are as following:

  1. Deck
  2. Superstructure
  3. Substructure
  4. Foundation
  5. Girder or beam
  6. Bridge tower
  7. Pier
  8. Pier cap
  9. Bearings
  10. Piles
  11. Pile cap
  12. Bridge anchor
  13. Suspension cable

Let us learn each components of a bridge in detail below.

components of bridge

1. Deck

Deck is the portion which carries all the traffic.

2. Superstructure

The portion which supports the deck slab and girder and connects one sub structure to the other. That means all the elements of the bridge attached to a supporting system can be categorized as superstructure.

3. Sub-structure

The parts of the bridge which support the superstructure and transmits all the structural loads of the bridge to the foundations. For example piers, abutments etc.

4. Foundation

Foundation is the portion which transmits loads to the bearing strata. Foundation is required to support the piers, bridge towers, portal frames. Generally, piles and well foundations such as H-pile, bore pile, pipe pile or precast concrete piles are adopted.

5. Girder Or Beam

Beam or girder is the part of superstructure which bends along the span. The deck is supported by beams.

girder bridge

6. Bridge Tower

It is the vertical supporting part used for cable stayed or suspension bridge. High strength concrete and Insitu method are adopted to construct the bridge tower.

Cable stayed bridge
Cable stayed bridge

7. Pier

Pier is the part of the substructure that supports the superstructure and transfers loads of super structure to the foundations. Pier is suitable for spanned bridges with maximum width of deck up to 8 m (2 traffic lanes).

The shape and size of pier mainly depend on aesthetics, site, space and economic constraints of the construction. Usually, bridge pier is constructed by in situ method with large panel formwork.

pier of bridge

8. Pier Cap

Pier cap is the topmost part of a pier which transfers loads from superstructure to the pier. It is also known as headstock. It provides sufficient seating for the girders and distributes the loads from the bearings to the piers.

pier cap of bridge

9. Bearings

Bearing is a device which supports the parts of superstructure and transfers loads and movements from the deck to the substructure and foundation.

The main purpose of providing a bearing is to permit controlled movement and decrease the stress involved.

bearings of bridge

10. Pile & Pile Cap

Pile is a slender member driven into the surrounding soil to resist the loads. Pile cap is a thick reinforced concrete slab cast on top of the group piles to distribute loads.

pile cap of bridge

11. Bridge Anchor

Bridge anchor is only used in suspension and cable-stayed bridges to resist the pull from suspension cable or counter span of the bridge.

12. Suspension Cable

It is used in suspension and cable-stayed bridges for the hanging, supporting and counter balancing of the bridge deck.

Also Read – 

Components Of A Building

Components Of Arch

Components Of Staircase

Components Of Road Pavement

Difference Between Pre-tensioning & Post-tensioning

If you like this article then please share it with your friends & also like our Facebook Page and join our Telegram Channel.

3 thoughts on “Components Of Bridge | Parts Of Bridge”

  1. I seriously feel like you should have added a video as well for deeper knowledge. While in the picture you should have marked the names which you are describing about.


Leave a Comment

error: Content is protected !!