By the 1980s, the eight pavilions present on the viaduct were in such a poor condition that some of their roofs had fallen in and the installation of internal props was required to halt their further collapse. As a consequence of its heritage status, all envisioned alterations to the viaduct need to be reviewed and agreed upon by English Heritage.
By the 1980s, the eight pavilions on the viaduct had deteriorated to such an extent that some of their roofs had collapsed and internal supports were needed to prevent further deterioration. As a result of its historical significance, any planned modifications to the viaduct must be reviewed and approved by English Heritage.