Use of the Arch as Substitution of a Footbridge Substructure

Abstract

The footbridge located at the new north bypass in Morelia, Mexico is very useful for thousands of pedestrians who use it daily. Not having a footbridge, both in the construction process of the bypass and already completed, would cause great problems as it is the only pedestrian passage in 3 km, leaving several colonies without communication.

Leaving the pedestrian bridge to function during the construction process of the release will facilitate the works, as the flow of pedestrians will not be affected by excavations and the use of heavy machinery. The change of the substructure type is planned in order to never close the pedestrian passage on the bridge, as well as to hinder or interfere in the works that are carried out in the construction of the northern bypass.

The structure of the arch shall be used to support the pedestrian bridge and thus to eliminate the central column formed by a tower of 4 steel beams type I.

The important part of this work is the transmission of the forces that will be transferred to the arch when the central column is cut, and all the dead load of the bridge is left over the new substructure.