New Liffey Bridge: Marlborough St to Hawkin's St

Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby notjim » Tue Jul 28, 2009 11:12 pm

Cathal Dunne wrote:What in God's name do we need another bridge for? DCC have a weird fetish for bridges, they can't stop building them over our lovely Liffey. Surely an existing bridge can be widened to accommodate whatever new transportation scheme they have planned or it could be put underwater. At this rate the Liffey will disappear under a thicket of bridges by 2020.


I decided to test your suggestion; here is a graph of the number of bridges, plotted against time: you can see it is remarkably linear, I pretend to do regression and find the line plotted

y=(x-1750)/15

which tells us that in 2020 there will be 18 bridges, which is actually the number we have today (*) and predicts this new proposed bridge will not be built. The rash of bridge building we see now is only a catch up for the "big gap" from 1900 until the 1980s, visible on the graph: you can also see the famine.

Image

(*) I included everything from the Sarah bridge east, but left off the Liffey Bridge, for which Wikipedia has no date.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby jimg » Tue Jul 28, 2009 11:26 pm

johnglas wrote:Are we asked seriously to believe that O'Connell Bridge is not wide enough to take pedestrians, cyclists, one lane of vehicles each side and parallel Luas lines? So you need to restrict cars/buses? Just do it.

Well they might have to move the taxi rank off the bridge and that would never do.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby fergalr » Tue Jul 28, 2009 11:28 pm

jimg wrote:Well they might have to move the taxi rank off the bridge and that would never do.


Or the bus stop for that matter. I've never heard of a bridge with a bus stop on it before.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Tue Jul 28, 2009 11:45 pm

fergalr wrote:Or the bus stop for that matter. I've never heard of a bridge with a bus stop on it before.


yes its just plane wrong if they are complaining about limited capacity...
I would rather spend 15 million on a underground carpark/bustop or redesigning con bridge?

where are the numbers/data that prove this will improve flow?
these cars public transport have no where to go that is not already filled with traffic in peak hour introducing another set of lights is only going to make it worst...
I did a planning application that involved a car lift the report was 20 pages or something from the consultant...
where is the report for this project?
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby marmajam » Wed Jul 29, 2009 4:43 am

westmoreland st will be closed for 4 years during metro north construction

there's your report.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Wed Jul 29, 2009 12:11 pm

I don't have a problem with a bailey bridge the :p

army can do that for free... not 15,000,000
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby marmajam » Wed Jul 29, 2009 12:39 pm

the army?

hmm it might work. they'd be well placed to take out the IT if there's any more reports about draining the liffey for MN etc

I believe there is room to bring Luas back down OCS but the reason "they're" bringing it down Marlborough St is partly to encourage the regeneration of that street.
the other reason is you can never have too many bridges
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Wed Jul 29, 2009 1:45 pm

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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby marmajam » Wed Jul 29, 2009 3:20 pm

missarchi wrote:swiss miss on piles she milk that

http://www.flickr.com/photos/25831992@N03/3575278179/sizes/o/


believe that's an early Calatrava.

Eddie Calatrava that is from Mullingar. Very fond of Meccano.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Cathal Dunne » Wed Jul 29, 2009 8:45 pm

notjim wrote:I decided to test your suggestion; here is a graph of the number of bridges, plotted against time: you can see it is remarkably linear, I pretend to do regression and find the line plotted

y=(x-1750)/15

which tells us that in 2020 there will be 18 bridges, which is actually the number we have today (*) and predicts this new proposed bridge will not be built. The rash of bridge building we see now is only a catch up for the "big gap" from 1900 until the 1980s, visible on the graph: you can also see the famine.
.


But you're just thinking about the average rise with your graph, not the marginal. As we can see from your graph, the marginal rate of increase is exceptional which, if continued, will see the Liffey buried under bridges by 2020.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Mon Aug 31, 2009 11:56 am

How quickly could this bailey bridge go up?
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Fri Aug 19, 2011 11:03 pm

Has this image disappeared?

Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » 20 Sep 2008 09:36
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Morlan » Sat Sep 10, 2011 12:22 pm

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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby missarchi » Sun Sep 11, 2011 2:37 pm

How are they going to fund this when they cant even "do a job" on O'Connell st bridge.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby urbanisto » Sun Sep 11, 2011 5:31 pm

Isn't the bridge being funded by the RPA as part of the Luas BXD line
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Zygnoth » Fri Sep 16, 2011 10:54 am

They should redo Butt bridge instead of this new bridge:

- Bury the dart line or run it over the bridge
- Remove the elevated dart line
- Make Butt bridge as wide as is needed

It wouldn't be putting the LUAS out a huge amount and would connect it to Tara Street station. Most importantly, it would remove the elevated DART bridge, which should never have been allowed in Dublin in the first place - the only elevated bridge along the liffey.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby notjim » Mon Sep 19, 2011 7:25 pm

Zygnoth wrote:- Bury the dart line or run it over the bridge
- Remove the elevbated dart line

Is this comment based on some knowledge of the grade required to get the DART down to this level and back up again?
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Zygnoth » Tue Sep 20, 2011 12:37 pm

It is based on zero knowledge of grading.

But if we're going to put cash towards something in the city centre, we might as well try to fix the mistakes made in the past.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby notjim » Tue Sep 20, 2011 2:34 pm

Zygnoth wrote:It is based on zero knowledge of grading.

But if we're going to put cash towards something in the city centre, we might as well try to fix the mistakes made in the past.


Well I think the issue of grading would make what you suggest extremely expensive when all it would achieve would be to remove a very attractive cast iron bridge and improve the view along the Liffey, which might be nice, however, it wouldn't dramatically increase rail capacity across the Liffey, which must be the priority.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby urbanisto » Tue Sep 20, 2011 3:06 pm

The "replace the Loop Line Bridge" item has been talked to death elsewhere on the forum, as has proposed Luas routes across the city. Shouldnt we just focus on the development at hand and making the proposed city Luas crossing as attractive and unobtrusive as possible.
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Zygnoth » Sun Sep 25, 2011 10:51 pm

Why should we just focus on the new development - if a new development is flawed, surely that warrants an option that it should not go ahead at all?

Ignoring the loop line proposal, the previous mention of O'Connell street seems like a very good option. Take out the middle island and you only need one more lane...
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby darkman » Fri Mar 09, 2012 4:40 pm

oooh a crane


Image
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Peter Fitz » Fri Mar 09, 2012 5:31 pm

It's not for that poxy bridge, is it?
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby urbanisto » Fri Mar 09, 2012 6:58 pm

what's a crane daddy?
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Re: New Liffey Bridge: Marlborough St to Hawkin's St

Postby Paul Clerkin » Fri Mar 09, 2012 8:55 pm

Sits Stephen on knee. "A long time ago, there was a race of giants, they called them developers and they bestrode Dublin like Colossus. As a symbol of their virility, they erected temporary structures all over the city....
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