N8/N25/N40 - Dunkettle Interchange [open to traffic]

It will be difficult to guage the change tonight, there's a broken down lorry blocking traffic coming out of the tunnel northbound for the last 20 mins on the webcam.

Took a few screen grabs of the delay N40N to M8N at different stages on Monday morning.

Sailed through with no stops at 11:30. Fascinating watching some of the lane changes, especially the last minute ones. People can be so incredibly stupid.

Noticed a few redundant signs (e.g. this one at the tunnel entrance) although I doubt that it was actually contributing to the confusion.

Yeah looks bad.

10km tailbacks in Midleton direction.

I can pretty much guarantee the cutting lanes is mostly deliberate now to skip queues.

Anyone else notice that one of the westbound gantries on the N25 has both "Cork" and "City Centre" on it... that one irritates!

6:30 this morning, coming from tunnel to N25, about six cars ahead of me, and two did a last-minute leap out into the M8 lane, one leapt into N25 (mine). In my platoon of cars, most were heading to M9 or city, which is not my normal experience of using this junction. I think that a lot of the M9 people don't know which lane to be in, and they're backlogging City/N25 traffic as a result. (N25 is actually reachable just fine if you're in the tunnel right-lane: just move left one lane once you exit the tunnel)

Also, a disturbing increase in sudden lane-changing in the tunnel. I think people who were held up yesterday are engaging in aggressing "pre-emptive" queue-jumping and this is causing more problems.

The normally shocking standard of driving in Cork is hitting a new low, though... I don't think people are really awake, and this is causing a problem.

On the upside, the actual free-flow merge for tunnel to N25 Eastbound works beautifully. Good use of tiger-tail markings to stream the traffic properly and discourage lane-jumping. I suspect the 60 km/h limit will remain on the interchange, though.

This is the exact movement I've been worried about for years. This will be the Dublin to Cork main route. It's also the Tunnel to Little Island route. It's also the vulnerable user route.

I'm still convinced it will back up and choke the tunnel. My reasoning is that I remember regular tailbacks of several kilometers to get into Little Island alone. I don't think the designers appreciated that many thousands of cars arrive into Little Island at roughly the same time, when proposing the flow. Allowing those to free-flow through the tunnel interchange must surely cause a buildup at the Little Island junction. This is also the Eastbound flow, and after 20 or so vehicles are stopped, the N25 traffic flow will be negatively affected. The result will be additional rat-running from Watergrasshill and Sarsfields Court to the city, and tailbacks in the tunnel.

I still hope I'm wrong. Time will tell

Your not wrong at all. This will become the main entrance into LI for people coming from the tunnel and the M8 plus the roundabout will also have the traffic which comes from the N8 in by the new link so it's going to be chaotic there.

They claim it won't and lots of posters here also state that but I reckon it will eventually have lights there unfortunately. Remember lots of Cork drivers particularly older ones can't seem to use roundabouts so when the inevitable accident count starts to rise the calls for traffic lights will begin. Pricks that don't use indicators or don't know/care how to use them will be a danger there too.

Where does it direct you to for Cork and where does it direct to City Centre? Since both are accessed on the N8, unless they've finally decided to recognise that the N40 leads to Cork too. Coming from the N40 just before the tunnel, it directs road users to "Cork" by going east on the N8, which used to say "Cork (East)" - as mentioned above

New foot bridge to provide access to the Tramore Valley Park from Grange.

Dunkettle

Just before the tunnel, after Mahon, there is a road sign saying ↖️ for Cork. Think it's misleading as you might think the road is before the tunnel. Saw someone making that mistake tonight.