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[[File: Bridge_21_20150607.jpg |thumb|300px|right| Borle Viaduct (Bridge 21) from the Severn Valley Way looking west]]
Borle Viaduct (Bridge 21) , which is situated between [[Arley]] and [[Highley]], carries the SVR over Borle Brook. Like other bridges on the Severn Valley Railway, it was built with the capacity for dual tracks but only ever installed for single line running. The viaduct is 42 yards in length, with four arches of 25ft span. [[Fishermen's Crossing]] lies a few yards to the north, with the site of the former [[Kinlet and Billingsley Sidings signal box|Kinlet and Billingsley Sidings]] a similar distance to the south.
==The viaduct is 42 yards in length, with four arches of 25ft span. preservation==The viaduct has suffered from mining subsidence over the years. Regular re-ballasting to overcome this has resulted in the line now being above the original parapet walls<ref>From The Window, Severn Valley Railway</ref>. Although originally there was no edge protection on the viaduct, sets of post and rail fencing were added.
===Refurbishment in 1977===
During winter of 1976-77, tie bars were inserted in the viaduct to strengthen it as part of the program to upgrade the line for heavier locomotives. The work was carried out with the assistance of the [[Manpower Services Commission]]. Intense cold and heavy rain brought work to a temporary halt while a large slip at [[Sterns]] and the collapse of part of [[Bridgnorth]] station car park were dealt with. Services in early 1977 ran for some weeks between Bridgnorth-Highley and Bewdley-Arley until work on the viaduct was completed<ref>SVR News 42-43</ref>.
===Refurbishment in 2019===During winter of 2018-19 contractors were appointed for the first phase in renovating the structure, which was showing fresh signs of water penetration. Planned work involved Work began on 8 January with removal of the fill track, ballast and material down to the existing concrete “flaunching” . Investigation revealed that the water penetration was occurring at the edge of the area filled in 1977 which had been shuttered and a mortar capping applied to allow any degradation to be treated seal it; since that time the capping had failed and the shuttering rotted away.<ref>[https://www.svrlive.com/winterworks2018-19 SVR Live Winter Works 2018 / 19]</ref> The remedial work involved some additional drainage discharge points being provided, an application of high specification sealer and layers of new imported fill material. The works also included the replacement of the fencing with more appropriate steel tubing fencing as used elsewhere on the SVR.<ref>Bond C., reported in SVR Forum 7 December 2018</ref>
==Borle Brook==
