a combination of some of these. […] 8.2.2.4 It can be seen that had there been additional stability devices in place (such as those mentioned in para 8.2.2.1) the cycle involving progressive loss of rotational restrain at the base of the pylon and accentuation of distress in P3-P4 might not have been initiated and the collapse might not have occurred.” 7. The final conclusions of the committee are relevant for this case, and are as follows: “CONCLUSIONS 9.1 From all the information made available by the various agencies as also the analysis and evaluation made by the Committee, it is felt that a combination of factors such as lack of stability and robustness in the partially completed structure, shortfalls in design and lack of quality of workmanship in the construction of span P3- P4 have contributed to the collapse of this bridge. The trigger for initiation of the collapse appears to have been unpredictable and sudden additional loading due to failure of supporting arrangement of