👉Key Components of a Typical Bridge

🛣️ Superstructure (Above the Bearings)

- Road Level: Surface where vehicles travel.
- Approach Slab: Connects the road to the bridge deck.
- Deck Slab: Main horizontal surface supporting traffic.
- Kerb: Raised edge separating the road from pedestrian areas.
- Expansion Joint: Allows movement due to temperature changes.
- Handrails: Safety barriers for pedestrians.
- Parapet: Protective wall at the edge of the bridge.

🧱 Substructure (Below the Deck)

- Back Wall: Vertical wall behind the abutment, retains earth.
- Wing Wall: Angled wall supporting the approach embankment.
- Abutment: End support of the bridge, transfers loads to foundation.
- Pier: Intermediate support between abutments.
- Bearing: Transfers loads from superstructure to substructure.
- Foundation: Base structure transferring loads to ground.

🧭 Structural Elements

- Longitudinal Girder: Runs along the length of the bridge, supports deck slab.
- Cross Girder: Perpendicular to longitudinal girders, distributes load.

🌊 Hydrological & Geotechnical Features

- HFL (High Flood Level): Maximum water level during floods.
- Effective Span: Distance between two supports (abutment to pier).
- Bed Level: Natural ground level below the bridge.
- Approach Embankment: Sloped fill leading up to the bridge.

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