Londoners: CS3: alternative route?

One would have thought that one could never rant enough about the current Blackfriars underpass horror, but now with the road surface removed across the stretch of Vic Emb my patience is wearing thin.
What reasonable alternative routes connect Greenwich and Trafalgar sq/Houses of Parliament?
What reasonable alternative routes connect Greenwich and Trafalgar sq/Houses of Parliament?
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A few others on here do the same route, from memory it's not too bad though the tower bridge end can get very congested I think but it's worth trying I reckon
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