Large, multispan cable-stayed bridges are relatively rare structures, yet two are now being built in the U.K. alone. Nearly all the cables on the emerging bridge across Scotland’s Firth of Forth waterway are in place, while the first stays are beginning to rise over the River Mersey crossing, 320 kilometers to the south.
Both cable-supported bridges include three towers and are due for completion by international teams of contractors next year. But the bridges differ in financing, structural form and construction methods.