Towns with an HQDC through the middle

[Owain]

A48 in Cardiff is dualled and fully grade-separated from the A48(M) to the A470. The limit used to be NSL too, but I don't know if it still is...

(Maybe it's now 20? ).

[Mapper89062]

It's not NSL (and 50 is quite justified due to the substandard width), but the A12 Gorleston-on-Sea throughpass is quite a distinctive one as it only opened in the 1990s. It's got a GSJ and several bridges, and used a disused railway alignment.

Another could-have-been one that was more recent than most was the alternative option for the A12 at Chelmsford, which would have seen the inner bypass upgraded to expressway standard.

[multiraider2]

A48 in Cardiff is dualled and fully grade-separated from the A48(M) to the A470. The limit used to be NSL too, but I don't know if it still is...

(Maybe it's now 20? ).

Don't joke! . Streetview (Aug 23) suggests a mixture of 40 mph and 50 mph now with an asymmetrical limit at some points.

[NICK 647063]

The A1(M) s goes through the tunnel, the old A1 route which ran past the airfield which is to the west of it. Most of the town is to the east of both of them although urban sprawl is heading west.

Also ruled out as it’s a motorway! The title states HQDC…..

In what way is a grade separated dual carriageway with a 70mph limit not high quality?

Because it’s a motorway not a dual carriageway! The topic would state Motorway not HQDC in title if that’s what examples were required.

[Owain]

A48 in Cardiff is dualled and fully grade-separated from the A48(M) to the A470. The limit used to be NSL too, but I don't know if it still is...

(Maybe it's now 20? ).

Don't joke! . Streetview (Aug 23) suggests a mixture of 40 mph and 50 mph now with an asymmetrical limit at some points.

In that case I'll consider myself privileged that I was able to enjoy it in the NSL days.

I remember my dad telling me that he drove on the A48/A470 GSJ on the day that it opened...

[trickstat]

Also ruled out as it’s a motorway! The title states HQDC…..

In what way is a grade separated dual carriageway with a 70mph limit not high quality?

Because it’s a motorway not a dual carriageway! The topic would state Motorway not HQDC in title if that’s what examples were required.

It has 3 lanes northbound and 3 lanes southbound and a central reservation which means it is a dual carriageway. Yes, it is also a motorway in the same way most other examples in this thread are also A roads.

[Chris5156]

Because it’s a motorway not a dual carriageway! The topic would state Motorway not HQDC in title if that’s what examples were required.

It has 3 lanes northbound and 3 lanes southbound and a central reservation which means it is a dual carriageway. Yes, it is also a motorway in the same way most other examples in this thread are also A roads.

To be clear the OP asked for towns with “a main through route dividing them, no roundabouts or signals, no speed restrictions, nothing”. The original example given was an all purpose road, but I don’t see anything there that excludes motorways.

[rhyds]

Also, lets not forget, "Motorway" is a legal, rather than engineering term. There's plenty of non HQDC Motorways out there!

[WHBM]

I'm fine with motorways being included

Did we get M60 at Stockport ?

[Vierwielen]

Because it’s a motorway not a dual carriageway! The topic would state Motorway not HQDC in title if that’s what examples were required.

It has 3 lanes northbound and 3 lanes southbound and a central reservation which means it is a dual carriageway. Yes, it is also a motorway in the same way most other examples in this thread are also A roads.

To be clear the OP asked for towns with “a main through route dividing them, no roundabouts or signals, no speed restrictions, nothing”. The original example given was an all purpose road, but I don’t see anything there that excludes motorways.

The OP went further: "In the USA this is nothing unusual to have freeways going through places, ...". As far as I am aware, the differences between an American "freeway" and a British "motorway" is minimal and probably varies from state to state.

[roadtester]

What about London, sort of e.g. A102/Blackwall Tunnel/A12 (I know there’s a bit of at-gradery on the north side, and it’s not quite through the middle…).

[A303Chris]

What about London, sort of e.g. A102/Blackwall Tunnel/A12 (I know there’s a bit of at-gradery on the north side, and it’s not quite through the middle…).

It's HQDC like the A406 North Circular in parts but is subjected to 40 / 50 mpg restrictions. None of it is 70mph

[A303Chris]

If we are accepting motorways then the M54 goes straight through the middle of Telford, while the the A38 goes straight through Burton-upon Trent at 70mph and further north bisects Alfreton in two also at 70mph

[KeithW]

A182 Washington Highway?

That's an odd one, to start with despite being decent quality D2 just south of Washington for much of the route its S2 and its non primary !

From Washington it heads SE to Easington, from there it multiplexes with the A19 heading north to Murton before heading NE to Seaham along what is basically S2 with climbing lanes, really that section should have a separate number. The road varies in quality so I don't see it as HQDC

Here it is at the bottom end of the scale.
https://www.google.com/maps/@54.7863743 ... &entry=ttu

[GC_NEMan1]

That's an odd one, to start with despite being decent quality D2 just south of Washington for much of the route its S2 and its non primary !

From Washington it heads SE to Easington, from there it multiplexes with the A19 heading north to Murton before heading NE to Seaham along what is basically S2 with climbing lanes, really that section should have a separate number. The road varies in quality so I don't see it as HQDC

The OP never specified that that the road had to be a HQDC along its entire length!

(Also I could have mentioned A1231 Sunderland Highway: I only picked the A182 because it has the flyover where it meets the A1231.)

[KeithW]

The OP never specified that that the road had to be a HQDC along its entire length!
(Also I could have mentioned A1231 Sunderland Highway: I only picked the A182 because it has the flyover where it meets the A1231.)

Indeed but I expected to find more than 4 miles of D2. The reality is that the New Town and the new A182 came into being about the same time, note the nice HQDC peters out here. Not that I class it as HQDC as there are 4 roundabouts in those 4 miles. More like Milton Keynes in fact than the A1(M).
https://www.google.com/maps/place/Washi ... &entry=ttu

[Big L]

… the M54 goes straight through the middle of Telford, …

Back on page 1…

[varga]

A66 through Boro is pretty high quality, it is before you hit the junction at the Evans Halshaw anyway

[AndyB]

In what way is a grade separated dual carriageway with a 70mph limit not high quality?

Because it’s a motorway not a dual carriageway! The topic would state Motorway not HQDC in title if that’s what examples were required.

It has 3 lanes northbound and 3 lanes southbound and a central reservation which means it is a dual carriageway. Yes, it is also a motorway in the same way most other examples in this thread are also A roads.

While motorways are a designation rather than a standard of road, motorways have certain requirements such as emergency phones and provision to get broken down vehicles off the carriageway.

The question given is specifically about HQDC, which is a particular engineering standard and does not refer to motorways. In NI, it’s a type 6 DC which means 1m hard strips, no central reservation gaps, continuous median barrier, and all junctions LILO, some form of GSJ including compact or roundabout.

If motorways had been intended, it would surely have been in the first post or the subject title.

[KeithW]

A66 through Boro is pretty high quality, it is before you hit the junction at the Evans Halshaw anyway

The A66 east of the Cargo Fleet Roundabout was built by the council rather than Highways England/the Highways Agency as I recall, the council funded the through about as I recall.
https://www.google.com/maps/@54.5750448 ... &entry=ttu