what all goes into inspecting a bridge to see if it needs to be repaired, or even replaced?

Answer 1

This will take several months for the investigators to conclude, but there are only three possibilities as to the cause of the bridge collapse:

1. The bridge inspectors did not follow their procedures or they lied about what the did to inspect the bridge.

2 The methods used to inspect the safety of a bridge with this design are inadequate

3. The group doing the repairs on the bridge did something unwittingly to change the bridge structural integrity.