Bridge is classified as 'Major Bridge' if the span length is
- Ain between 8 – 30 m
- Bin between 30 – 120 mCorrect
- Cin between 120 – 240 m
- Dabove 240 m
Solution
Concept
Bridge classification by span
Formula
Minor 8–30 m; major 30–120 m; long span > 120 m
Step-by-step solution
1. IRC classification: minor bridge 8–30 m, major bridge 30–120 m, long span above 120 m.
Explanation
IRC classification: minor bridge 8–30 m, major bridge 30–120 m, long span above 120 m.
Shortcut
Minor 8–30, major 30–120, long > 120.
Correct answer: B) in between 30 – 120 m