I noticed this morning that there are now trees planted on the juncton
between the A13 and the A406, right between where the flyover would go
if the A13 was ever to be extended over a hypothetical road bridge
over the Thames (such as the Thames Gateway Bridge).

Can someone explain why this is considered a good idea when it'll only
make the scheme harder to achieve, particularly if the good folk in
the civil service / GLA leave it long enough that the trees reach
maturity?