Trustworthy, bureaucrat, administrator
5,275
edits
Changes
Explanation of different widths of infrastructure.
Much of the trackbed and infrastructure of the Severn Valley Railway was constructed to allow for future expansion to double track.<br>In general, overbridges and viaducts which would have been costly and disruptive to convert at a later date were built to double track width during initial construction of the line, whereas cuttings, embankments and smaller underbridges which could be widened at a later date without disrupting traffic were built to single track width.<br>
Although the railway always remained single track, much evidence of the double trackbed is still visible, particularly in the form of wider bridge spans.
<gallery>
File:Bridge 28 20150610.jpg|[[Overbridge at north end of Eardington siding]] with siding alongside the single running line.
File:Overbridge Near Crossing Cottage 20110522.jpg|[[Accommodation bridge near Crossing Cottage]].
File:Bridge 31 20150607.jpg|[[Pig Bridge]]showing the double track arch over a single track cutting. The embankment has been allowed to encroach upon the disused part of the trackbed.File:Bridge 32 20150610.jpg|[[Knowlesands Tunnel]]. The is another example of a double track arch over a single track has been realigned towards the centre of the bridge and the embankment has been allowed to encroach upon the disused partcutting.
File:Oldbury-Viaduct-DMU-1962-09-16.jpeg|[[Oldbury Viaduct]].
File:Bridge16.jpg|[[Accommodation bridge south of Arley]] showing the single track width of the embankment and minor underbridge
</gallery>
Although the deck of [[Victoria Bridge]] is only wide enough for a single track, the abutments were built to double track width. [[Albert Edward Bridge]] at Coalbrookdale was built to an almost identical design and carries a double track by means of girders cantilevered out from the four main arched ribs.
