Disclosed is a step assembly for use in climbing a utility structure. The step assembly comprises a rod member and a plate member. The rod member comprises a generally L-shaped rod, a shoulder formed contiguously to the generally L-shaped rod, and an arm pivotably coupled to the shoulder by a pin. The plate member comprises a duct having a longitudinally formed internal passage, and a support plate attached at one end portion of the duct and formed transversally to the duct, wherein the internal passage of the duct contiguously provides an opening in the support plate at the one end portion. The aligned shoulder and arm are configured to pass through the internal passage.