Masonry flying arches strutting the retaining walls in Chorley cutting, Manchester-Blackpool line, L.M.S.R.

In order to accommodate the new platform 4 and the reversibly signalled slow line, a deep cutting had to be cut back and held up in places with a concrete retaining wall.

Biddle even notes how Brunel, after observing how one retaining wall had part-collapsed during the construction of one of the GWR's Bristol tunnels during heavy rains, "decided to leave it like that and planted it with ivy to represent a ruined medieval gateway".

Retaining wall

Meaning

Noun