A12 Wanstead is George Green (300 m). Did you mean Green Man (Leytonstone) tunnel for the 175 m?
These tunnels were completed by 1999 (in fact, I'm certain the Wanstead (George Green) tunnel opened in 1998).
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A12 Wanstead is George Green (300 m). Did you mean Green Man (Leytonstone) tunnel for the 175 m?
It worth adding this list to the wiki, I'd say. A number of the bridges you've listed are already on the wiki, but there are some on the wiki that you don't have (e.g., the 3 bridges on the AWPR).
A green bridge, also known as a landscape bridge or wildlife overbridge, is a form of landscaping that allows a forest, park or green belt area to pass over a road uninterrupted, allowing wildlife and people to safely pass over a road without necessarily knowing that they are passing over a road.
While a Tunnel can produce a similar outcome, Green
Absolutely , in fact the old route was replanted and is now a nature reserve managed by the National Trust.Vierwielen wrote: ↑Wed Aug 04, 2021 16:53 Does the Hindhead Tunnel class as a Green land-bridge? The old A3 could certainly have been dualled at a lower cost than the tunnel, but that would have made a mess of the Devil's Punchbowl. Since the tunnel opened, the old A3 has been lifted to allow the flora and fauna from either side of the old road to merge with each other.
Yes it is complete, opened around Christmas. It is about halfway along the new road between the A39 and Woolavington RoadJim606 wrote: ↑Tue Aug 09, 2022 15:13 Apparently, there is another one near the A39. Don't know the area, but by the sound of things it might actually be complete?
https://thisisgravity.co.uk/gravity-ins ... 9/04/2021/
Good to see Holmesdale on this list. While less well known than Bell Common (from a landscape point of view), it was designed to provide a green strip between Enfield and Hertfordshire, which it still achieves. The area provides open space - see here: https://www.flickr.com/photos/dgeezer/3 ... otostream/
I think the modern idea of a green 'environmental' bridge is from the Netherlands, however the idea of a cut and cover bridge deck with greenery on top dates back to the 1980s with the M25.Richardf wrote: ↑Wed Aug 10, 2022 23:30 When did Land Bridges, as we now know them, first get built? Certainly weren't around 30 years ago, and the first I know of in my area wasn't built until 2010/11. I know of at least one purpose built DC that ought to have one but was built too early to include one.
I guess the only place where a retrofit green / environmental crossing has been suggested / proposed in the M8 in Glasgow city centre. Although having said that Glasgow Council are building a pedestrian bridge at Sighthill which has some green elements to it. Are there an obvious place to put a green bridge on any of the M3 / M40 / A3 / A35 as mentioned above?Richardf wrote: ↑Thu Aug 11, 2022 17:31 I'd say there are many places where new build roads have created significant severance for wildlife where they cut through natural areas (as opposed to farmland and built up areas) where the only connection is a sterile concrete road or foot bridge or a dangerous traverse of the road itself. Under this criteria you could add one just about anywhere!
The secondary reason for building one as opposed to a standard bridge is reducing the visual impact of the road in the landscape, which narrows things down a bit.
I would go for roads in big cuttings, like M3 Twyford Down, M40 Stokenchurch or A3 Butser Hill as well as one near me, the A35 east of Dorchester where it crosses Puddletown Forest (the one that started me off on this originally).
All "Pie in the Sky" I know. Never likely to happen and the logistics of doing so would be horrendous! Nice dream though.
I think the Coventry project is the only 'retrofit' urban dual carriageway green canopy to date. Although as mentioned on another thread there is also talk of a similar scheme in Glasgow https://www.glasgowtimes.co.uk/news/173 ... p-forward/ What I didn't realise with Glasgow is proposal actually covers three different areas of the motorway.Alderpoint wrote: ↑Fri Aug 12, 2022 08:23 A new "green bridge" was created in the centre of Coventry a few years ago to better connect the station and the city centre. They did it by filling in the gap between the two bridges of the former GSJ and extending it.
It's much more pleasant to walk over than the former underpasses or the footbridge.
Probably, though there is an urban single carriageway retrofit green bridge on the A11 in East London.
The Hammersmith flyover is by definition elevated so I doubt any wildlife is likely to be at risk apart from the odd pigeon or rat , as for tunnelling it would be horrifically expensive and disruptive - that isnt going to happen, much the same applies the M8.
The " Miss James bridge" just south of the Hindhead tunnel is a green bridge of sorts. Not very wide but very green. ( this is the best photo I can find to link to ). [https://www.alamy.com/stock-photo-miss- ... 33313.html]Vierwielen wrote: ↑Wed Aug 04, 2021 16:53 Does the Hindhead Tunnel class as a Green land-bridge? The old A3 could certainly have been dualled at a lower cost than the tunnel, but that would have made a mess of the Devil's Punchbowl. Since the tunnel opened, the old A3 has been lifted to allow the flora and fauna from either side of the old road to merge with each other.