Tay Road Bridge Tay Road Bridge The Tay Road Bridge carries the A92 road across the Firth of Tay from Newport-on-Tay in Fife to Dundee in Scotland, just downstream of the Tay Rail Bridge. At around , it is one of the longest road bridges in Europe, and was opened in 1966, replacing the old Tay ferry. As part of the modernisation projects of the 1950s, a road bridge across the Tay had been considered for several years. In August 1958 a traffic census and test bores were taken to locate the most suitable crossing for the bridge. The bridge was designed by
Tay Rail Bridge Bouch had used the technique for viaducts including the Belah Viaduct (1860)) on the South Durham & Lancashire Union Railway line over Stainmore, but for the Tay Bridge, even with the largest practicable caissons the pier dimensions were constrained by their size. Bouch’s pier design set six columns in a hexagon maximising the pier width but not the number of diagonal braces directly resisting sideways forces. The engineering details on the Tay Bridge were considerably simpler, lighter, and cheaper than on the earlier viaducts. On these the machined base of each column section docked securely into a machined enlarged section