River Tay River Tay The River Tay () is the longest river in Scotland and the seventh-longest in the United Kingdom. The Tay originates in western Scotland on the slopes of Ben Lui (), then flows easterly across the Highlands, through Loch Dochart, Loch Iubhair and Loch Tay, then continues east through Strathtay (see Strath), in the centre of Scotland, then southeasterly through Perth, where it becomes tidal, to its mouth at the Firth of Tay, south of Dundee. It is the largest river in the UK by measured discharge. Its catchment is approximately , the Tweed's is and the Spey's is
Tay Rail Bridge Tay Bridge the diagonal bracing was by means of flat bars running from one lug at the column section top (an integral part of the column casting ) to two sling plates bolted to the diagonally opposite lug. Bar and sling plates all had a matching longitudinal slot in them; the tie bar was placed between the sling plates with all three slots aligned and overlapping and a gib driven through all three slots and secured. Two cotters (metal wedges) were then positioned to fill the rest of the slot overlap, and driven in hard to put the tie under