Abergele signal box stands somewhat isolated between the up and down fast lines at Abergele and Pensarn station. The 1902-built London and North Western Railway Type 4 box was the block post between Rhyl (to the east) and Llysfaen (to the west) but with the latter commonly switched out it was usually Colwyn Bay. Following refurbishment in the mid-2000s the box was closed on 26.03.18 along with all others along this stretch of the North Wales coast with control moving to the Wales Railway Operating Centre in Cardiff.
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