Design and construction of a concrete tied-arch bridge in Ashton, Western Cape

摘要

This original bridge structure has reached the end of its functional service life (Ronné et al., 2018) and will be replace with a new tied-arch bridge comprising a cable-supported concrete deck which spans 110 m between bearings and arching ribs which rise 22 m above the asphalt road surface.The superstructure, which was completed mid-2020, adjacent to the existing road-alignment, will be transversely jacked to its final position after completion of the substructure. This operation is currently scheduled for the second half of 2021.