N25/N30 - New Ross Bypass [open to traffic]

Reuben1210

Sam Russell wrote: »

And did as it was gradually extended towards Athlone.

Why is this practice not adopted everywhere?

Honestly,

Ending at a junction, as happened at Gort, makes the most sense.

marno21

The end of the M20 in Limerick and the planned extension to Rathkeale will end in a lane drop. The N20 DC in Cork does, and the N22 Ballincollig bypass also.

It should be implemented more, especially given the large amount of unnecessary roundabouts on DCs in Ireland.

Sam Russell

Free flow is the name of the game - more speed with less risk of accidents. If the planners know that onward extensions are planned it makes sense to build the join at the time.

Chris_5339762

Reuben1210 wrote: »

The only place that i know of where that didn't happen was when the original section of the M18 stopped at Gort...they finished at a grade separated junction...;)

Original plans was to stop at a roundabout (well, one of the roundabouts on a half built grade separated junction). With the CPOs already done for the next section they very very sensibly decided to build the whole junction to avoid any tie-in mess!

spacetweek

Chris_5339762 wrote: »

Original plans was to stop at a roundabout (well, one of the roundabouts on a half built grade separated junction). With the CPOs already done for the next section they very very sensibly decided to build the whole junction to avoid any tie-in mess!

That's right, gotta remember that when Ennis-Gort opened in 2010 at the time it was thought that the last part to Athenry was going to open within like 3-4 years. So they thought the junction wouldn't be incomplete for long. Ended up being 7 years.

m17

Here's pics of the earthworks form the n25 new Ross website September 172345678

marno21

marno21 wrote: »

Bridge progress update @ end of September 2017:



Plans for Q4 2017:



Seems to be motoring along well!

Bridge progress update @ end of October 2017.



Coming along nicely. 14 months or so until opening

m17

Barrow bridge west approach

m17

N25 bypass new Ross drone overview 12/11/17https://youtu.be/W-oOg8Khtv4

m17

The bridge deck 09/11/17

JohnC.

That drone video is the first time I've really noticed the width. Is it one lane each way? Or does the deck get wider on top of what's there?

Or maybe I'm mistaken in how narrow it looks to me.

alta stare

JohnC. wrote: »

That drone video is the first time I've really noticed the width. Is it one lane each way? Or does the deck get wider on top of what's there?

Or maybe I'm mistaken in how narrow it looks to me.

Pretty sure it will be a dual carraigeway.

JohnC.

Yeah, I had a look at the site, which I could have done first I suppose. That does say dual.

Middle Man

It will be Type 1 Single...

alta stare

Middle Man wrote: »

It will be Type 1 Single...

http://www.n25newross.ie

Single? Some sections of the bypass are single but not all.

marno21

Glenmore-R733 GSJ will be Type 1/motorway standard (planned to open as dual carriageway)
R733-N30 will be Type 2/2+2

Middle Man

marno21 wrote: »

Glenmore-R733 GSJ will be Type 1/motorway standard (planned to open as dual carriageway)
R733-N30 will be Type 2/2+2

I was only joking about the SC Type 1... spec on the bridge...

No, the bridge itself AFAIK will be HQDC standard, but with verge strips rather than hard shoulders - a bit like the A Road DCs in England. I guess the pavement widths will be around 9.0m - of course, it would be very costly to include hard shoulders. That said, I do think the HQDC standard should have been used to as far as the current N25 (from where the N30 will split).

m17

Here's some pics of the barrow crossing form the n25 newross website October 1723456

m17

The bridge deck

m17

Structures form the n25 new Ross website October 1723456

m17

works completed at the end of November,13 months to opening roll on Jan 19

josip

What do the letters A, P and TP mean in the progress pic?
Pillar?...

Middle Man

josip wrote: »

What do the letters A, P and TP mean in the progress pic?
Pillar?...

Abutment, Pier, Temporary Pier...

josip

So the Temporary Piers will be removed when construction is finished?
Wouldn't be cheaper/easier just to leave them in place? (Not a civil eng )

m17

josip wrote: »

So the Temporary Piers will be removed when construction is finished?
Wouldn't be cheaper/easier just to leave them in place? (Not a civil eng )

Temporary pillers are also known as falsework,falsework consists of temporary structures used in construction to support spanning or arched structures in order to hold the component in place until it's construction is sufficiently advanced to support it's self,falsework also includes temporary support structures for formwork used to mould concrete to form a desired shape
Here is a glossary of bridge construction terms

josip

Why does a TP have to be removed when the bridge is complete?
Is it because the loads and stresses are not balanced and that the extra support makes the bridge less stable?

Sam Russell

Mod: Please do not use this thread to discuss Road Traffic Incidents - particularly those involving fatalities. It is not as if such discussions will result in changes to the particular road and could be considered as a form of gawping.

It is not part of the Infrastructure Charter, and it is disrespectful to those personally involved, and could cause them significant distress.

If posters think such discussions are helpful, then conduct them in the Motoring Forums.

I have decided to delete the posts regarding the RTI as there was significant and tragic loss of life. I wish not to cause any additional grief to those involved in any way.

Thank you.

m17

The bridge deck 03/12/17

m17

JohnC. wrote: »

That drone video is the first time I've really noticed the width. Is it one lane each way? Or does the deck get wider on top of what's there?

Or maybe I'm mistaken in how narrow it looks to me.

Here's the next phase of the project when the falsework is removedhttps://youtu.be/TBrxRvJ8vVo

Reuben1210

Here's some drone footage posted on Youtube from a few weeks ago!

https://www.youtube.com/watch?v=W-oOg8Khtv4