1.

As per IRC recommendations minimum straight length of approaches on either side of the bridge should be ________1. 15 m2. 20 m3. 25 m4. 30 m

Answer» Correct Answer - Option 1 : 15 m

Explanation:

As per IRC recommendations, the minimum length of approaches at the ends of the bridge is 15 m.

  • The approaches on either side of the straight bridge shall have a minimum length of 15 m and suitably increased where necessary to provide minimum sight distance
  • If there is a change of gradient, suitable vertical curves shall be introduced as per IRC:23.
  • A single vertical curve shall be provided for bridges having a total length of 30 m, Approaches to vented causeway likely to be affected by flood shall be provided with suitably designed safety works


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