N7 / N24 Interchange At Ballysimon
http://www.archiseek.com/content/showpost.php?p=54802&postcount=747CologneMike wrote:I think the former UL president Dr Ed Walsh has another vision for an Atlantic road corridor than the Limerick County Council does! Bad building practices will equate to road fatalities here. Enough land was acquired for the N7 and the realigned N24 stretch and yet the interchange is a dangerous mess!
I did not even understand why the N24 on this new stretch was not built to dual carriageway standard in the first place? A roundabout was provided for the university on the way into the city centre. Why did they not build the interchange with roundabouts similar to that at the Dooradoyle interchange.Tuborg wrote:That interchange was always going to be a shambles, diamond interchanges just arent built anymore!, especially not on routes that carry relatively high volumes of traffic!, their capacity is very limited and large queues often develop, this happens on the ballysimon road where traffic wishing to access the cork/kerry slip have to give way to traffic entering the city on the N24. The problem could definately be solved with the installation of two roundabout at the entrance to the slip roads, im no fan of roundabouts myself but i certainly dont think a free flow interchange is needed here, the dumbell(junction with 2 r/bouts) wqould be a cheap and relatively speedy solution to the current difficulties! Although I feared limerick county council would install traffic lights in the near future and sure enough!...
Any new developments here?
Last August the Limerick County Council proposed works to improve the interchange, including ramps, traffic signals, road markings, public lighting and the introduction of a new speed limit on the N24.
Having seen this bird’]of the N7/N24 interchange at Ballysimon from the [B]Parkes Properties web site, I would have to retract some of my criticism previously posted above against the Limerick county council and the NRA as the interchange site had a few tricky constraints to overcome.
There are three roads on three different elevations, that cross a railway line at three different points, coupled by the little Groody river , a small graveyard plus of course there are clusters of one-off Bungalows to contend with at the interchange.
I presume the old N24 road (single carriageway) was not suitable for the N7 / N24 interchange.
The old N24 road crosses under the railway line.
The new N7 road (dual carriageway) crosses over the old N24 road and crosses over the railway line.
The new N24 road (single carriageway) in turn crosses over the N7 road and crosses over the railway line.
That the old and new N24 roads run parallel and close to each other, the new road had to be elevated to a height which was two flights higher than the older one. I presume costs prohibited elevated roundabouts at the interchange along with redirecting the little Groody river and the small graveyard?
I hope they get the N7 / N18 / N20 Rossbrien interchange right, though from what sketches I have seen, I still can’t figure out some of the exit slip lanes?