The Glamorgan-Gwent Archaeological
Trust Historic Environment Record
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Trefil Rail Road Causeway and Culvert
Primary Reference Number (PRN) : 08861g Trust : Glamorgan Gwent Community : Tredegar Unitary authority : Blaenau Gwent NGR : SO1336512495 Site Type (preferred type first) : Post-Medieval Railway bridge Status : Scheduled Monument
Summary : At SO 13482 12083, the course of the 1793 Trefil Railroad (see 08858g for history) leaves the line of the 1908 mineral railway built over it and heads north into Cwm Milgatw.
Description : At SO 13482 12083, the course of the 1793 Trefil Railroad (see 08858g for history) leaves the line of the 1908 mineral railway built over it and heads north into Cwm Milgatw. From this point on, the railroad survives as a well-preserved earthwork, some 4.0m wide. At SO 13439 12378, the railroad enters a 2.0m deep cutting in the bedrock which leads on to the head of the valley and the two viaduct bridges crossing the branches of Nant Milgatw. On the western side of the valley, at SO 13365 12495, the railroad is enters a cutting into the bedrock some 3.0m deep and 100m in length. At the southern end of this cutting, a very well-preserved causeway and culvert carries the railroad across the drainage system associated with Milgatw Farm. The causeway is 5.0m high with an arch 1.0m in height and span. At the northern edge of the culvert is a 15m stretch of sleeper beds. A similar stretch some 60m long is leads to the junction with the later railway viaduct. Management The culvert and causeway are in excellent condition and stand in open moorland between Rassau industrial estate and Trefil. (01)
Blaenau Gwent County Borough Council , 2003 , Blaenau Gwent Heritage Audit Interim Report 2002-2003
Cadw , New Entry to the Schedule of Monuments
01. Blaenau Gwent County Borough Council (2003), Blaenau Gwent Heritage Audit: Interim Report 2002-2003, Heritage section