=+46. Orthotropic steel bridge decks with closed ribs have been widely used in suspension bridges, cablestayed bridges, and urban elevated expressways due to their overall light weights, ease of construction, and high load-carrying capacities. In the article “Fatigue Evaluation of Rib-to-Deck Welded Joints of Orthotropic Steel Bridge Deck” (J. Bridge Engr., 2011: 492–499), researchers examine the physical properties of 22 bridge specimens. Each specimen was attached to a fatigue testing apparatus. Fatigue life was determined as the number of cycles (in millions, p. 158) at the end of the fatigue test. For each specimen, the corresponding stress range (MPa) was also recorded.