Monday Message 12th July 2021

“Quality management is an absolutely essential part of all engineering activities”

This truism is well illustrated in the following non-technical 12 minute Youtube video showing how a propagating crack was missed on the still-closed I-40 bridge at Memphis Tennessee. Despite use of smart technology (drone inspection) two years ago, HUMANS failed to spot the obvious crack in a steel tension member and the SYSTEM failed. It is probably due to conservative design and some luck, that the 6 lane bridge carrying 50,000 vehicles per day over the Mississippi River did not fail catastrophically.