Impossible (?) Road Improvements

[Peter Freeman]

Milky Way to Andromeda Bridge

[jackal]

Euclidean Plane Grade Separation

[Peter Freeman]

FPV Drone Flyover.

[jackal]

Squaring the traffic circle.

[SteveA30]

Road back in time. 1964 please.

[Chris5156]

Atlantic Bridge, linking I-495 in Massachusetts with A495 in North Wales.

[B1040]

A34 at Oxford.
A259 at Rye and Winchelsea.
A1(M) Don Bridge
Many city centres (I'm thinking of you Cambridge)

[Owain]

Filling the potholes.

[FleetlinePhil]

...
Black Hole Regeneration Route
...

The M65 opened decades ago - you must have noticed .

Go on then - A646 bypass tunnels for Todmorden and Hebden Bridge. Geology and budget would be minor problems compared with the opposition of the local traders, I would expect.

[MotorwayGuy]

The completion of the M23 to Croydon.
Adding slip roads on the M26 with A225 (Would be entirely possible but remember this is in West Kent).
Dualling the entire A303 to expressway standard.

[Fluid Dynamics]

. . .Judging by all the years of delays and excuses I've been hearing in the last ten years, the A64 from Hopgrove to Malton is rapidly approaching this category!

. . .Lancaster Western Bypass perhaps?!

. . .Hastings and Bexhill?!

Chris Williams

Bexhill and Hastings has kinda half been done in a way that probably doesn't quite please anyone. The final part of the Queensway Link is still unfinished so the new link road (which incorporates the Queensway) doesn't quite reach the A21. If anyone ever does want to resurrect the original bypass plans it would be easier as one of the most controversial parts, Combe Vally, formed part of the link road built, and the link roads bridges, once out of the Bexhill suburban area, generally look like they could take D2. Problem is the section of the A259 east of here. I think spending the money on the A21 or A27 Polegate to Lewes would have more benefit economically to Hastings.

[IAN]

Upgrade all of the A470 between Merthyr and Conwy to D2 or at least wide S2 + 1 to make a decent south-north Wales route. As road upgrades are practically a non-starter in Wales, at least reopen the GWR Carmarthen to Aberystwyth rail line. (no chance of either of these happening).

[Owain]

Upgrade all of the A470 between Merthyr and Conwy to D2 or at least wide S2 + 1 to make a decent south-north Wales route. As road upgrades are practically a non-starter in Wales, at least reopen the GWR Carmarthen to Aberystwyth rail line. (no chance of either of these happening).

I agree with the idea, but at the northern end I think it would make more sense to dual what is currently the A487 to Bangor, and give the whole Cardiff-Bangor route the same number (preferably F99).

[multiraider2]

I go away for a couple of days and this thread takes on an astronomical expansion.

Do Bojo Killer Clown's central London big dig with a twist. Forget just the two east-west routes and have a twelve-lane underground inner london ring road and have the M1, A1, A10, M11, A12, A13, A2, A20, M23, A3, M3, M4 and M40 all also dug underground to meet it. The M25 would have half or more of its traffic taken away. £50 billion? £100 billion?

[Glenn A]

Very expensive and probably very controversial, but one that could be done at great expense would be a motorway from jct 4 of the M5 to jct 18 of the M6, a by pass of the western side of the West Midlands conurbation that would provide faster access from the south west to the north west and relieve the M5 and M6 through Birmingham and the Black Country.

[KeithW]

I go away for a couple of days and this thread takes on an astronomical expansion.

Do Bojo Killer Clown's central London big dig with a twist. Forget just the two east-west routes and have a twelve-lane underground inner london ring road and have the M1, A1, A10, M11, A12, A13, A2, A20, M23, A3, M3, M4 and M40 all also dug underground to meet it. The M25 would have half or more of its traffic taken away. £50 billion? £100 billion?

Well given that the latest costs for the Silvertown Tunnel have reached £2.2 billion for 1.4km or approx 1 mile for a tunnel with 2 lanes each way I dont think its even remotely feasible let alone affordable.
The Gallions Reach crossing was abandoned as I recall.

The best we have is the A12 from the end of the M11 down to the A13 and Blackwall Tunnel and that seemed to take for ever to be built.

[graeme_t]

Two more Lower Lower Lower (etc..) Thames crossings - between Southend (maybe the end of the A1160) and Sheerness on the Isle of Sheppey (around the end of the A249), and between the end of the A133 in Clacton and the end of the A28 in Margate. Consider them parts of the Grand (and Plus Grand) Conturnement of London to match that being developed around Paris

[Glenn A]

An eastern by pass for Workington, starting on the A596 near the golf course, crossing the A66 and joining the current A596 near the turn off for Seaton. This would obviously remove a lot of traffic from the town centre and speed up journeys to Maryport and is doable, but only if you want to spend millions compensating the golf course, replacing the town's biggest secondary school, and wrecking a park.

[Summers-lad]

Lunar Expressway
Saturn Ring Road
Asteroid Beltway
Sun Inner Distribution Road
Black Hole Regeneration Route
Universe Orbital Motorway
A303 Stonehenge Tunnel

I'm sure a Vogon Constructor Ship or two could manage some of these.

[skiddaw05]

Seatoller to Wasdale Head expressway. You'd just need a nice big cutting through Great Gable