Abstract: At approximately 1:20 a.m. on October 10, 1990, Employees #1 through #4 were erecting steel pipe falsework for an elevated cast-in-place concrete road structure. Employee #3 was inspecting the strap supporting the 60 ft horizontal beam when the previously installed wood and beams suddenly collapsed. Employees #1, #2, and #3 fell 45 ft to the ground. Employee #1 was hospitalized with a fractured pelvis and left elbow. Employee #2 was hospitalized with four fractured ribs and a fractured left leg, a punctured lung, and a concussion. Employee #3 was hospitalized for 24 hours for observation. Employee #4 was treated at the hospital for a lacerated arm and then released.