I was thinking how many of these are there out there? I refer mostly to bypasses built on unclassified roads and intended to be unclassified, rather than roads built as classified roads and later downgraded to U/C. Could also include roads/bypasses built unclassified and intended to be classified but never were, or perhaps not intended to become classified routes but became so later on.

Where are they?

I know of on near my home at West Stafford, built to take quarry traffic away from village:
http://www.google.com/maps?ll=50.704965,-2.386007&spn=0.01541,0.038581&t=h&z=15

Bypass at the town of Kingswells, branching off the A944 is one such unclassified bypass, built to a good standard too.

Western Approach Road in Edinburgh bypasses the busy A71 through Gorgie.

Medway has a few unclassified high quality S2 roads that were built in the 1970's/1980's to by-pass residential and narrow sections of road namely Beechen Bank Road and Walderslade Road

Also Boothby Road in Fraserburgh - a high standard S2 that links the A90 with the A98 and acts as a by=pass for Fraserburgh

There is one around Caeathro in Wales. It creates a Caernarfon southern bypass, linking the A487 to the A4086.

And if you're able to count the very staggered junction, you can get back to the A487 on the Bangor side of Caernarfon, all on unclassified roads.

I don't know whether it was built as a by-pass, but it certainly functions as one now - the road running to the west of Howden starts off unclassified at a Totso T-junction with the primary A63, and then gains B-road status at a Totso crossroads after half a mile. This is the signposted route between Selby and the M62...

The Northern Distributor Road to the north of Bridgwater I believe is unclassified, google shows it as the A39 but I think this is an error. http://maps.google.co.uk/maps?q=bridgwa ... m&t=m&z=14

It's signposted as a link to the A39 http://maps.google.co.uk/maps?q=bridgwa ... 49,,1,1.82 (which multiplexes with the A38 from the M5 to Taunton Road (although it is also signposted along Bath Road which was there first - very confused down here in Somerset!)

The Drove was there for a long time and then the rest was plugged in around during the last decade.

Gypsum Way - A bypass of the Nottinghamshire village of Gotham - taking lorries out the village on there way too/from the British Gypsum works and the A453
http://osm.org/go/eu8Mdkw0--

The road around Fraserburgh is unclassified, wouldn't really call it a bypass though.

What about the Par to Fowey private road?

Developer funded roads often act as bypasses. Cullompton from M5 J28 to the old A38 at the north end of the town, avoiding the traffic lights in the centre. Only 2 intermediate rbts so, not too bad.

Imminent is the new link from the A365 to the A3102, giving Melksham a bypass around 3 sides. Several rbts from a drive along it through a gap in the mesh barrier, when no-one stopped me luckily. Tea break I think.

The OS are also now showing it as A39, so it seems it may actually now be a spur or whatever of the A39!

Also in Somerset, wasn't the Wellington Bypass put together and opened before becoming the A38? In Burnham, the new 'Frank Foley Parkway' is a sort of town bypass and the A39 used to go into Minehead Town Centre for years after through traffic was signed along Periton Road.

In Weston, Oldmixon Road / Winterstoke Road is a signed through route around the town centre, and in Bath the road from The Globe to Odd Down is a well known route around the south of the city, although neither are really purpose-built bypasses.

Although Streetmap hasn't been updated yet, all OS levels on Getamap (1:25k, 1:50k and 1:250k) are now showing Western Way/Homberg Way as part of the A39. (Interestingly, Google marks it as A39 but shows it in yellow).

Groby (on the NW edge of Leicester, tucked in between the M1, A46 and A50) has an unclassified bypass to link Ratby to the A46/A50.

Damson Parkway, Solihull. Such roads seen ten-a-penny in 1980s/90s estates.

The Garelochhead bypass is or isn't A814, depending on your source. Maps say yes, signs say no.

Unsure if this counts but the Hawkinge bypass which is the A260, it was originally unclassified* for its completion.

*According to Os 179 c2004

The signs are a complete mess and don't seem to know whether the B872 exists or not.

This was built so as through traffic would no longer go through the RAE land, now Cody Technology Park. Only half the old road exists; Old Ively Road to the west, the eastern part was reverted back to nature.
http://g.co/maps/2edmv

The new Bicester link road is currently unclassified (and unnamed), although I believe eventually the B4030 (ex A4095) will eventually be diverted along it.

http://www.sabre-roads.org.uk/maps/inde ... 7,-1.18324,