Clark's Bridge, Beagh Road, Omagh, Co Tyrone, BT78 1TE

Clark's Bridge is a single-span road bridge built around 1850, carrying Beagh Road over what is now a disused railway line near Omagh in County Tyrone. It was constructed to carry the road over the newly completed section of the Londonderry to Enniskillen Railway.

The bridge is built of squared-and-snecked rockfaced sandstone throughout. It features splayed abutments, spandrels and parapet, with a plain sandstone springing course to the arch. A rockfaced string course runs at carriageway level, and the parapet is finished with rockfaced coping. To the east and west, curved retaining walls terminate in square pillars. The structure comprises a single elliptical-headed arch with dressed rockfaced voussoirs, while the soffit is squared-and-snecked. The carriageway is approximately 4 metres wide, with the road bounded on each side by hedging at embankment level.

The bridge first appears by name on the second edition Ordnance Survey map of 1854, at which point the railway was captioned as the Londonderry & Enniskillen Railway. By the third edition (1905–6), it had become the Great Northern Railway (Ireland). The Londonderry & Enniskillen Railway Company was incorporated in 1845 and construction began shortly thereafter, reaching Strabane by April 1847. The line subsequently extended to Omagh (1852), Fintona (1853) and Enniskillen (1854). The railway brought significant commercial benefits to the towns it served and to surrounding agricultural lands. The company was eventually leased to the Dundalk & Enniskillen Railway Company in 1860, subsequently becoming the Irish North Western Railway Company. This was absorbed by the Northern Railway Company on 1 January 1876, which in turn merged with the Ulster Railway Company on 1 April 1876 to form the Great Northern Railway Company (Ireland). Following post-war competition from road transport, the GNR ceased to exist as an independent company in 1953, with its system acquired jointly by the Governments of Northern Ireland and the Republic of Ireland. In 1958, the portion of the former Great Northern system within Northern Ireland came under the control of the Ulster Transport Authority. Subsequent contraction saw many lines deemed unremunerative closed down.

The bridge survives in good condition with stonework detailing and dressings retained, though other examples along the railway line remain in better condition.