'Segmental bridge construction' using 'balanced cantilever' method means:
Choose the correct answer
Building from both abutments simultaneously without piers
Segments added symmetrically from each pier as paired cantilevers — no mid-span falsework; prestressed progressively
All segments cast at the same time using full formwork
Lifting pre-cast deck panels by cranes from the top
Correct Answer
B. Segments added symmetrically from each pier as paired cantilevers — no mid-span falsework; prestressed progressively
Why is this the answer?
Balanced cantilever: segments (2–5 m long precast or cast-in-place) built symmetrically in pairs from each pier outward (one segment each side alternately) → balanced overhanging cantilevers grow from pier without falsework touching ground below. Used for: navigable rivers, deep gorges, highways. Pre-stressing: cantilever tendons on top; after closure (midspan): additional bottom tendons. Typical span: 70–200 m. Famous examples: Bandra-Worli Sealink, metro viaducts.
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