N7 - Newlands Cross upgrade

BuzzFish

MMFITWGDV wrote: »

Does the road come back in time for the Luas P&R exit?

Yes.

Roryhy

Big changes now starting to happen. I see main bridge supports now poured and precast walling sections being put in place along the sides. It's starting to put a shape on things. No opportunity to take any pics though.

Carawaystick

What's the speed limit gonna be from M50 out to where the old 100 limit applies?
When it's finished.

Roryhy

Carawaystick wrote: »

What's the speed limit gonna be from M50 out to where the old 100 limit applies?
When it's finished.

I'd like to think it will be 100kph all the way to Naas but don't recall seeing that anywhere.

vince

My bus from cork last tuesday turned left before works and picked up the n4 via lucan would it have been congested at 11.30 in morning or was the driver taken no chances. Coming home I passed via newlands x at 20.30 no hold ups.

Hotblack Desiato

Roryhy wrote: »

I'd like to think it will be 100kph all the way to Naas but don't recall seeing that anywhere.

Unlikely, given the bad/dangerous design of the junction, for example merging from M50 southbound to Bowstring Bridge. 60km/h on that stretch is too much for the 'skills' of the average Irish motorist.

jd

ninja900 wrote: »

Unlikely, given the bad/dangerous design of the junction, for example merging from M50 southbound to Bowstring Bridge. 60km/h on that stretch is too much for the 'skills' of the average Irish motorist.

Bowstring Bridge?? Which bridge is that?

SimonQuinlank

Bridge over the N7 from Luas to Monastery Rd.

spacetweek

ninja900 wrote: »

Unlikely, given the bad/dangerous design of the junction, for example merging from M50 southbound to Bowstring Bridge. 60km/h on that stretch is too much for the 'skills' of the average Irish motorist.

Bit much - the length of road, 200 metres, provided for this 5-lane merge is way too short, skills or no.

Ideally, the merge/diverge lanes on the southside of the N7 at Bowstring would be removed and moved here.
This would have other advantages: It sorts out the left-in-left-out junction here. The current lanes are on a steep hill with a tight bend. It would make it easier to link in the proposed long-distance cycle lane around the back of the Luas P+R which will use the Bowstring.

RANDAL

How long before we are using flyover, I'm guessing Nov at latest.

regedit

RANDAL wrote: »

How long before we are using flyover, I'm guessing Nov at latest.

They seem to be doing a good work with the flyover. The construction of the supportive structures seems to be progressing well-at least to me. The supportive pylons are there on both sides of traffic lines and the wall seems to be taking shape really well. It wouldn't surprise me if they get the flyover sorted much sooner

Geogregor

Pictures? :rolleyes:

spacetweek

Geogregor wrote: »

Pictures? :rolleyes:

Just use the traffic cam!

Middle Man

spacetweek wrote: »

Just use the traffic cam!

Our version of the Great Wall of China is really taking shape - where's the flyover though??? :D:D

Geogregor

spacetweek wrote: »

Just use the traffic cam!

It is not the same. Where are the Boards.ie ground troopers?

BuzzFish

Geogregor wrote: »

It is not the same. Where are the Boards.ie ground troopers?

Well, We'd hate to disappoint, so here is a grab from my bike-cam this morning. You can see from the vans position that the landfill for the "Ramp" is well under way on the dublin side.

Geogregor

Wow, it's going faster than I expected.
Thanks for photo.

But honestly, we need Kreator. Where is he?

Hotblack Desiato

Dunno, no more photos here http://www.skyscrapercity.com/showthread.php?t=1599158&page=9 since August

rameire

two pics from today

1 pic is of the south side of the junction, and its supporting pillars for the beams that will bridge the gap.
on the south side of the junction, they have put in a good bit of the new curbing for the slip road that will run parallel to the flyover.
I assume this will be part of the next phase that will open to assist the building process.

pic 2 is of the northern side of the junction, not really clear, taken from hands free kit so didnt get to mess with it.
they have also put in a lot of new curbing on the northern side of the junction that would have been originally the bus lane.

RahenyD5

Red arrows in lights! About time, far easier to read than two full red circles which one can be mistaken for your direction. May not be too long for red arrows to make an appearance at O'Connell Bridge and other busy Dublin junctions.

Sheldons Brain

RahenyD5 wrote: »

Red arrows in lights! About time, far easier to read than two full red circles which one can be mistaken for your direction. May not be too long for red arrows to make an appearance at O'Connell Bridge and other busy Dublin junctions.

I agree. However, these will not be used consistently.

Geogregor

It seems they are really steaming ahead.
I suppose precast beams will be used rather than structure cast in situ?

L1011

Geogregor wrote: »

.
I suppose precast beams will be used rather than structure cast in situ?

Really has to be to allow the road underneath stay open. Even if a box mould was put in place, the risk of concrete dripping on to a car would be not worth it. Precast can go in in a night.

Geogregor

MYOB wrote: »

Really has to be to allow the road underneath stay open. Even if a box mould was put in place, the risk of concrete dripping on to a car would be not worth it. Precast can go in in a night.

I think it has probably more to do with speed of the construction and the fact that this bridge will be really straight and simple, no bend of the structure.

Bridges are often cast over the active roads below, if necessary.

L1011

Geogregor wrote: »

I think it has probably more to do with speed of the construction and the fact that this bridge will be really straight and simple, no bend of the structure.

Bridges are often cast over the active roads below, if necessary.

I've never seen it done in Ireland at all, not over an active route.

We've had cases of installing precast go horribly wrong as well though: http://historical-debates.oireachtas.ie/D/0552/D.0552.200204170099.html (that'd be the R449 now, support beams for a dual carriageway collapsed on the railway line below)

Mc Love

MYOB wrote: »

I've never seen it done in Ireland at all, not over an active route.

We've had cases of installing precast go horribly wrong as well though: http://historical-debates.oireachtas.ie/D/0552/D.0552.200204170099.html (that'd be the R449 now, support beams for a dual carriageway collapsed on the railway line below)

If I'm not mistaken, it was done in Limerick to facilitate the N18 passing through Ballykeefe over the active Ballinacurra road.

https://www.google.ie/maps/@52.643386,-8.645683,3a,75y,246.27h,78.29t/data=!3m4!1e1!3m2!1s4-mOAnfi5_mm1_CVV_MNdA!2e0

That bridge was built for the road that was originally there but was under it during construction if I remember correctly.

smokie72

Can anyone answer this. Why are there only 4 supporting pillars on the west side of the newlands cross compared to 6 on the dublin side of the junction. Are they going to add more supporting pillars later on? Not enough room at the moment to add another 2 pillars to that side of the road?

BuzzFish

Here is a driveby from this morning. More to give those who don't pass regularly an update...

mackerski

BuzzFish wrote: »

Here is a driveby from this morning. More to give those who don't pass regularly an update...

Thanks for the vid - but do stop lines not apply to bikes any more?

mackerski

mackerski wrote: »

Thanks for the vid - but do stop lines not apply to bikes any more?

Looks like he edited out the "wait".