METHOD FOR CONSTRUCTING ELEVATED TYPE TRAFFIC ROUTE

PROBLEM TO BE SOLVED: To provide a method for constructing an elevated type traffic route in which the elevated type traffic route is built easily on an existing traffic route under the state in which an effect on an existing traffic is reduced without requiring the construction of a detour around the existing traffic route when a working region is ensured on the existing traffic route. SOLUTION: In the method for constructing the elevated type road 1, the method contains a support erection process in which supports 4 are erected on a plurality of footings 40 buried at regular intervals along an existing road 3, a bridge forwarding process in which a bridge is built to the upper section of the existing road 3 by successively forwarding divided bridges 2' from workbenches 6 erected on the existing road 3 and constructing the bridges 2' among the supports 4 and a bridge lowering process in which the elevated type road 1 is built on the existing road 3 by the bridge 2 by lowering the fixed sections of the bridge 2 and connecting the bridge 2 and the existing road 3.