The platforms aren't there at Glasgow Cross, the bricked up staircases end in mid air.
Many thanks for that mention.
Somebody I know who once worked for the former Strathclyde Regional Council many moons ago saw the plans for the eastern flank of the motorway box that was mentioned in the Bruce Report. The drawings had shown that the former platform at Glasgow Cross would be used for the pillars to support the elevated motorway above.
As the eastern flank of the motorway box would have meant demolition of the buildings from the Provand's Lordship (believed to be the oldest house in Glasgow) down the High Street to the Tollbooth Steeple at the Cross, needless to say this section of the motorway box was never built. The western flank from Tradeston (link to the Renfrewshire Motorway) to St Georges Cross was built (which enabled the former slum buildings in Anderston to be demolished), as was the northern flank from St Georges Cross to Townhead to link with the Monkland Motorway. The southern flank would have ran from the vicinity of Gorbals to Tradeston, which would have had the present day M74 from Carmyle cutting across Glasgow Green (the Winter Gardens and Peoples' Palace were in the way) linking up with the box at Gorbals. Although the southern flank was eventually constructed, this was on a further southerly alignment passing through Rutherglen, Eglinton Toll, and linking with the M8 west of the Kingston Bridge.