Mabey & Johnson also built several permanent steel box-girder bridges, after acquiring the South Wales-based Fairfield shipbuilding and engineering company. Its heavier steel fabricating capabilities helped Mabey build the Erskine Bridge over the River Clyde in Glasgow and the Avonmouth Bridge, and sections of the Humber Bridge, the Britannia Bridge in Anglesey and the City Bridge in Newport. Overseas, the company also built highway bridges and flyovers in Central America, the Caribbean and the Far East, and established a US-based company, Mabey Bridge Inc, in Baltimore, Maryland in 1989.
