Wiley's Bridge, Lisnahanna Road, Kilskeery, Trillick, Omagh, Co Tyrone BT78 3RR

Wiley's Bridge is a single-span road bridge built around 1850, carrying Lisnahanna Road over a field arch near Kilskeery in County Tyrone. The bridge is constructed of coursed rockfaced sandstone with splayed abutments, rockfaced spandrels, and a parapet terminated by rubble coping and a rockfaced sandstone string course at carriageway level. A single elliptical-headed arch with dressed rockfaced voussoirs spans the opening, with an ashlar sandstone soffit. The carriageway is approximately four metres wide.

The bridge retains its original detailing and dressings, and the structure remains unaltered. Agricultural land adjoins the bridge to the north and south, bounded to the road by rubble walling and hedging.

The bridge was built to carry Lisnahanna Road over the route of the Londonderry and Enniskillen Railway. The bridge first appears on the second edition Ordnance Survey map of 1852. The Londonderry and Enniskillen Railway Company was incorporated in 1845 and construction began shortly after, reaching Strabane by April 1847. The line subsequently extended to Omagh in 1852, Fintona in 1853, and Enniskillen in 1854. These extensions brought significant commercial advantages to the towns they served and to the surrounding agricultural lands. The railway line facilitated the emergence of Omagh and Strabane as major market centres from which goods could be conveyed northwards to the port of Londonderry.

The Londonderry and Enniskillen Railway underwent successive amalgamations: it was leased to the Dundalk and Enniskillen Railway Company in 1860, which became the Irish North Western Railway Company, and was absorbed by the Northern Railway Company on 1 January 1876. This company merged with the Ulster Railway Company on 1 April 1876 to form the Great Northern Railway Company (Ireland), as it appears named on the third edition Ordnance Survey map of 1905-6.

Following the Second World War, the railways faced increasing competition from road transport. In 1953, the Great Northern Railway ceased to exist as an independent company, and its entire system was acquired jointly by the Governments of Northern Ireland and the Republic of Ireland. By 1958, the greatly diminished Northern Ireland portion passed under the absolute control of the Ulster Transport Authority. Subsequently, many lines deemed unremunerative were closed. With the removal of the railway, the bridge's significance has been much reduced, and better examples of similar structures are listed elsewhere.