Railway Stell West is a Site of Special Scientific Interest in County Durham, England.

The area where the site is located was once a large wetland known as Bradbury, Mordon, and Preston Carrs, and the only remaining portion of it is the ditch next to the railroad.

The western bank is relatively undisturbed and supports a richer assemblage, in which the locally scarce common meadow rue, Thalictrum flavum, is abundant.

A wide variety of species occur, including water horsetail, Equisetum fluviatile, celery-leaved crowfoot, Ranunculus sceleratus, sharp-flowered rush, Juncus acutiflorus, and great pond sedge, Carex riparia.

Great spearwort, Ranunculus lingua, a rarity in north-east England, is still found, but a number of other uncommon species have been lost in recent years, among them narrow-leaved water-parsnip, Berula erecta, water dropwort, Oenanthe fistulosa, and fringed water-lily, Nymphoides peltata.