"Aidan Stanger" a écrit dans le message de
...
Why is it that so much less of the embankment on the S side of the
Thames incorporates a road than the one on the N side?

As perhaps you know, the word "Embankment" means a man-made bank or dyke,
and the one along the north bank of the Thames was created to provide an
alternative to the congested "Strand", by reclaiming land along the
shoreline (presumably owned by the Crown, unlike the expensive adjacent
private property). Furthermore, the north bank is 'concave' in that area, so
that the shore provides the shortest route, whereas on the convex south
bank, a route further away from the river would be shorter. Finally, the
south bank remained in use by businesses needing access to the river long
after the north bank had become mainly residential...

Also, have there been any serious proposals to put roads in the Thames
more recently? I'm wondering if (back when cars were seen as the future)
they contemplated anything like Brisbane's (completely grade separated)
River Expressway

I don't know about such roads, but certainly the "Thames Path" running as
close as possible to the riverside is a long-term project that has already
made good progress; Google reports some 250,000 hits for the term.

Regards,

- Alan (in Brussels)