The present invention relates to a method of constructing a pillar of a long bridge bridge, comprising the steps of: (A) installing an elevating form surrounding the reinforcing bars constituting the skeleton of the pillar and ascending along the height direction of the pillar, Pouring the concrete as much as the set height into the inside of the riser form so that a top part of the reinforcing bars is exposed; (B) connecting new reinforcing bars to the exposed upper end of the pre-installed reinforcing bars when the poured concrete reaches a set condition; And (C) when the concrete is cured, raising the riser form and pouring concrete into the inside of the riser form to extend a portion of the main tower while exposing a top portion of the reinforcing bars installed in the step (B) Wherein the step (B) and the step (C) are repeated one or more times.
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