This load combination is applicable to normal operational use of the bridge, with a 90 km/h wind and all loads taken at nominal values.

• A. Fatigue and Fracture limit states
• B. Service I
• C. Extreme Event II
• D. Service II

Answer: (B)

Normal operation under nominal loads is assessed using the serviceability limit state. This checks that, during everyday use, the bridge’s deflections, cracks, and vibrations stay within limits that ensure usability and comfort, with loads applied at their nominal values (no partial factors). Fatigue and fracture focus on damage from repeated loading, not routine serviceability. Extreme Event II covers very rare, severe conditions beyond normal operation, and Service II is a different serviceability scenario that isn’t the standard check for ordinary use. With a 90 km/h wind and nominal loads, the appropriate check is the serviceability limit state for typical service.