McClays Bridge, Beltany Road, Lislimnaghan, Omagh, BT78 5NQ

McClays Bridge is the remains of a single-span railway bridge built around 1850 in rubble stone, roughly coursed. It originally carried the Portadown-Londonderry line of the Great Northern Railway over a field track aligned east-west, crossing through a rural landscape between Clark's Bridge to the north and Todd's Bridge to the south.

The bridge incorporates a diminutive secondary arch over a stream at its north side. The embankments and railway line have been completely removed, leaving only freestanding segmental abutments on each side. These quadrant abutments are an unusual feature and are well detailed with dressed rubble coping. The carriageway appears to have been approximately 4 metres wide and shows no evidence of a single-span masonry arch, suggesting the former railway line was supported on iron girders rather than stone arches.

The structure is constructed of random rubble walling. Its ruinous condition reveals the construction methods and has some structural and technical interest, though insufficient fabric survives to merit listing.

The bridge first appears on the second edition of the Ordnance Survey Map of 1854 as part of the Londonderry and Enniskillen Railway. By the third edition of 1905 it had become part of the Great Northern Railway. The Londonderry and Enniskillen Railway Company was authorised in 1845 to construct a single-track line extending southwards from Londonderry. By April 1847 the line had reached Strabane, with construction costs of approximately £10,000 per mile. The line subsequently reached Omagh in 1852, Fintona in 1853, and Enniskillen in 1854. In 1860 the Londonderry-Enniskillen line was leased to the Dundalk and Enniskillen Railway Company, later the Irish North Western Railway Company. In 1876 this merged with two other companies to form the Great Northern Railway Company (Ireland).