Explain Situations that warrant a damage inspection?

- Floods - bridges located in streams, rivers and other waterways with known or suspected scour potential.

- Build-up of debris at piers or abutments - this material build up effectively widens the unit and may cause scouring currents or increase the depth of scour.

- Evidence of deterioration or movement - many underwater deficiencies only become apparent above water when the distress extends above the water line or is manifested by lateral movement or settlement.

- Significant earthquake - bridges also need to be inspected after an earthquake where structural damage is expected.