John Rowland wrote:
"Dave Arquati" wrote in message
...

The Government-approved scheme which was scrapped
recently was to build a tunnel at Henlys Corner. Although
much better for local residents than a flyover, it would
have been extremely expensive and that's why the
Mayor dropped it when he published his Transport
Strategy in 2001. Rather than making improvements
just for car users, it seems more appropriate to improve
safety for motorists and pedestrians at the junction
(given that the current footbridges are virtually unused as
pedestrians don't like being relegated to bridges and tunnels).


Where are the footbridges at Henlys?

Sorry, it's not at Henlys Corner itself but it's included within the
same scheme. It's down the road at the Brent St & Golders Green Rd
crossroads.

Incidentally, I have just designed a grade separated junction for Henlys on
the back of an envelope. It's easy - all it needs is two perpendicular
bridges and one somewhat skew bridge to give both the A1 and the A406 a
straight run through. All turns would be allowed, including A1 w/b to A406
e/b, which is currently banned. Land take would be small, and gradients
would be easy. Whether it could cope with the traffic flows is another
question.

I sense problems involved with Mutton Brook which runs directly
alongside the site. If you sink a foundation, won't it just fill up with
water there? (Bearing in mind I know nothing about engineering).

--
Dave Arquati
Imperial College, SW7
www.alwaystouchout.com - Transport projects in London