The Leaderfoot Viaduct, also known as the Drygrange Viaduct, is a

railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a pre ...

viaduct A viaduct is a specific type of bridge that consists of a series of arches, piers or columns supporting a long elevated railway or road. Typically a viaduct connects two points of roughly equal elevation, allowing direct overpass across a wide v ...

over the

River Tweed The River Tweed, or Tweed Water ( gd, Abhainn Thuaidh, sco, Watter o Tweid, cy, Tuedd), is a river long that flows east across the Border region in Scotland and northern England. Tweed cloth derives its name from its association with the R ...

near Melrose in the

Scottish Borders The Scottish Borders ( sco, the Mairches, 'the Marches'; gd, Crìochan na h-Alba) is one of 32 council areas of Scotland. It borders the City of Edinburgh, Dumfries and Galloway, East Lothian, Midlothian, South Lanarkshire, West Lothi ...

History

The viaduct was opened on 16 November 1863 to carry the

Berwickshire Railway The Duns Branch and the Berwickshire Railway together formed a through railway route from Reston, Scottish Borders, Reston, near Berwick-upon-Tweed, to St Boswells in the Scottish Borders. The line was promoted in two stages. The first was from ...

, which connected Reston with

St Boswells St Boswells ( sco, Bosels / Bosells; gd, Cille Bhoisil ) is a large village on the south side of the River Tweed in the Scottish Borders, about southeast of Newtown St Boswells on the A68 road. It lies within the boundaries of the historic ...

, via

Duns Duns may refer to: * Duns, Scottish Borders, a town in Berwickshire, Scotland ** Duns railway station ** Duns F.C., a football club ** Duns RFC, a rugby football club ** Battle of Duns, an engagement fought in 1372 * Duns Scotus ( 1265/66–1308 ...

and

Greenlaw Greenlaw is a town and civil parish situated in the foothills of the Lammermuir Hills on Blackadder Water at the junction of the A697 and the A6105 in the Scottish Borders area of Scotland. At the 2001 census, the parish had a population of ...

. The engineers of the railway were Charles Jopp and Wylie & Peddie. The railway was severely damaged by flooding during August 1948, with 7 bridges on the line failing, and the line closed to passenger traffic on 13 August 1948. Freight trains continued to run across the viaduct as far as Greenlaw until 19 July 1965. In 1981, the poor condition of the viaduct meant that it was due to be demolished. It was upgraded from Category B to A listing in 1986.

Historic Scotland Historic Scotland ( gd, Alba Aosmhor) was an executive agency of the Scottish Office and later the Scottish Government from 1991 to 2015, responsible for safeguarding Scotland's built heritage, and promoting its understanding and enjoyment. ...

took over control of the viaduct from

British Rail British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four British rai ...

in 1996.

Design

The amphitheatre at Trimontium - geograph

The viaduct stands from the floor of the river valley. The arches, each of span, are of

brickwork Brickwork is masonry produced by a bricklayer, using bricks and mortar. Typically, rows of bricks called '' courses'' are laid on top of one another to build up a structure such as a brick wall. Bricks may be differentiated from blocks by s ...

, and the

abutment An abutment is the substructure at the ends of a bridge span or dam supporting its superstructure. Single-span bridges have abutments at each end which provide vertical and lateral support for the span, as well as acting as retaining walls ...

pier image:Brighton Pier, Brighton, East Sussex, England-2Oct2011 (1).jpg, Seaside pleasure pier in Brighton, England. The first seaside piers were built in England in the early 19th century. A pier is a raised structure that rises above a body of ...

s and walls are of rustic-faced red

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) ...

. Some later strengthening of the abutments and piers with old rails and

buttress A buttress is an architectural structure built against or projecting from a wall which serves to support or reinforce the wall. Buttresses are fairly common on more ancient buildings, as a means of providing support to act against the lateral (s ...

es on the southern valley side is very obvious. It is straight over its whole course, and runs in a broadly northerly direction. The viaduct is in good condition, having been renovated between 1992 and 1995. Repairs included replacement of masonry and brickwork,

grout Grout is a dense fluid which hardens to fill gaps or used as reinforcement in existing structures. Grout is generally a mixture of water, cement and sand, and is employed in pressure grouting, embedding rebar in masonry walls, connecting secti ...

ing, and underwater repair to one of the

cutwater In architecture, a starling (or sterling) is a defensive bulwark, usually built with pilings or bricks, surrounding the supports (or piers) of a bridge or similar construction. Starlings may be shaped to ease the flow of the water around the brid ...

s. It is near to the Roman settlement of Trimontium, which is to the south-west of the viaduct. To the east of the viaduct are the Drygrange Old Bridge, a road bridge dating from 1776, and its modern successor. This group of three bridges is sometimes known as Tripontium. To the east of the viaduct, the River Leader flows into the Tweed from the north.

References

External links

{{River Tweed Railway bridges in Scotland Bridges in the Scottish Borders Category A listed buildings in the Scottish Borders Listed bridges in Scotland Viaducts in Scotland 1863 establishments in Scotland Bridges completed in 1863