Great Yarmouth road improvements

The study of British and Irish roads - their construction, numbering, history, mapping, past and future official roads proposals and general roads musings.

There is a separate forum for Street Furniture (traffic lights, street lights, road signs etc).

Registered users get access to other forums including discussions about other forms of transport, driving, fantasy roads and wishlists, and roads quizzes.

Moderator: Site Management Team

Post Reply
User avatar
jackal
Member
Posts: 6644
Joined: Tue Jan 08, 2008 23:33
Location: M6

Great Yarmouth road improvements

Post by jackal » Mon Nov 29, 2021 06:59

There are two major schemes in Great Yarmouth.

The under construction Third River Crossing will provide a new dual carriageway across the Yare to the south of the existing crossings, with associated dualling of William Adams Way. The crossing itself is a bascule bridge, lifting in the centre to allow larger vessels to pass. Costs are some £121m.

Info: https://www.norfolk.gov.uk/roads-and-tr ... r-crossing
Layout: https://www.norfolk.gov.uk/-/media/norf ... t-2018.pdf

The A47 Great Yarmouth Junctions provides improvements at two sites. The first is Harfreys rbt, the interface between the aforementioned William Adams Way and the A47. This just removes some hatching to provide a third lane on the southbound entry and other minor changes.

Image

The other site is Vauxhall rbt, where the A47 makes a 90 degree turn over a railway bridge. It's proposed to add a second bridge, providing a wider entry and exit, with the rbt elongated to accommodate it.

Image

While these are undoubtedly improvements, the A47 must have one of the very highest volumes on an S2 bypass in the country at some 32k AADT. Just how much more capacity do they think there is to squeeze out of it? The A47 should at least be dualled south of Vauxhall rbt, and preferably grade separated as far as the A143.

Junctions scheme page: https://nationalhighways.co.uk/our-work ... 43267ae0-1
Good article in local paper: https://www.edp24.co.uk/news/traffic/va ... ed-8521786

User avatar
jackal
Member
Posts: 6644
Joined: Tue Jan 08, 2008 23:33
Location: M6

Re: Great Yarmouth road improvements

Post by jackal » Mon Nov 29, 2021 19:42

The NH scheme page has been updated, including a dreaded Virtual Exhibition Room.

https://nationalhighways.co.uk/our-work ... rovements/

User avatar
skiddaw05
Member
Posts: 1825
Joined: Thu Nov 30, 2006 21:33
Location: Norwich

Re: Great Yarmouth road improvements

Post by skiddaw05 » Tue Nov 30, 2021 19:46

It's a bit surprising that Highways Whatever have worked out that Gapton Hall roundabout no longer needs anything doing to it. Traffic already queues regularly on the northbound A47 approach, sometimes all the way back to Harfreys roundabout and it can only get worse with the addition of the 3rd crossing traffic

I can't see the S2 section between Gapton Hall and Vauxhall being dualled as it would need either a new lifting bridge alongside the existing Breydon Bridge or the existing bridge to be replaced by a new D2 structure, which would cost a fortune. Though I have wondered if the existing deck would be wide enough for an S2+1, I'll have to get out and measure it sometime!

User avatar
jackal
Member
Posts: 6644
Joined: Tue Jan 08, 2008 23:33
Location: M6

Re: Great Yarmouth road improvements

Post by jackal » Tue Nov 30, 2021 20:34

skiddaw05 wrote:
Tue Nov 30, 2021 19:46
It's a bit surprising that Highways Whatever have worked out that Gapton Hall roundabout no longer needs anything doing to it. Traffic already queues regularly on the northbound A47 approach, sometimes all the way back to Harfreys roundabout and it can only get worse with the addition of the 3rd crossing traffic

I can't see the S2 section between Gapton Hall and Vauxhall being dualled as it would need either a new lifting bridge alongside the existing Breydon Bridge or the existing bridge to be replaced by a new D2 structure, which would cost a fortune. Though I have wondered if the existing deck would be wide enough for an S2+1, I'll have to get out and measure it sometime!
It looks like the new bridge would be about half as long as Breydon Bridge, but then it's D2 rather than the S2 that would be needed. So it would probably be £100m-£200m. A lot but not completely crazy money in road building terms.

Gapton Hall should be grade separated.

User avatar
A303Chris
Elected Committee Member
Posts: 3331
Joined: Mon Sep 20, 2004 14:01
Location: Reading

Re: Great Yarmouth road improvements

Post by A303Chris » Wed Dec 01, 2021 14:54

skiddaw05 wrote:
Tue Nov 30, 2021 19:46
It's a bit surprising that Highways Whatever have worked out that Gapton Hall roundabout no longer needs anything doing to it. Traffic already queues regularly on the northbound A47 approach, sometimes all the way back to Harfreys roundabout and it can only get worse with the addition of the 3rd crossing traffic
According to models from NH and Norfolk CC, when I was working up that way four years ago, Gapton Hall has loads of spare capacity. Now I thought differently based on surveys we had done, but was not going to argue as it definitely benefited our case.
The M25 - The road to nowhere

User avatar
skiddaw05
Member
Posts: 1825
Joined: Thu Nov 30, 2006 21:33
Location: Norwich

Re: Great Yarmouth road improvements

Post by skiddaw05 » Sat Dec 04, 2021 23:39

I've had a bit of time to think about this. Now I know next to nothing about traffic modelling but some comments on Sabre have suggested that there is scope to manipulate the figures to get the outcome you want. To be fair the northbound queues to the Gapton roundabout could have more to do with the switch from D2 to S2, and the almost non-existent merge length as you leave the roundabout (here), but the powers-that-be's assertation that the roundabout has plenty of spare capacity glosses over the very real congestion problems at this location

Post Reply