Multi-Vehicle Collision Causes Major Delays at Jack Lynch Tunnel
Multi-vehicle collision blocks lane at Jack Lynch Tunnel; major delays building on N40 eastbound and from Mahon approach.
A multi-vehicle collision on the N40 eastbound has caused significant traffic disruption at the Jack Lynch Tunnel this lunchtime, with Lane 1 blocked and delays building in both directions during the busy midday period.
The collision, reported at 12:21 today (23 July 2025), occurred between the Jack Lynch Tunnel's west and east entrances, one of Cork's busiest traffic bottlenecks. Transport Infrastructure Ireland (TII) has confirmed that Lane 1 is affected, forcing eastbound traffic to merge into the remaining lane.
The incident has created a knock-on effect for northbound traffic approaching from the J10 Mahon direction, with delays now building on multiple approaches to the tunnel. Motorists heading towards the tunnel from both directions are experiencing significant journey time increases.
TII Traffic has advised drivers to exercise extreme caution when approaching the area, reduce speed, and follow all instructions from emergency personnel on site.
For those planning to use this route, alternative journey options should be considered. Drivers heading eastbound might consider using the South Link Road via the N27 as an alternative, though this route is likely to experience increased traffic volumes as motorists seek to avoid the tunnel delays.
The Jack Lynch Tunnel, which carries thousands of vehicles daily beneath the River Lee, is a critical piece of Cork's transport infrastructure. Any incident in this location typically causes widespread disruption across the city's road network, particularly during peak travel times.
Motorists are advised to allow extra time for their journeys this afternoon and to check for updates before setting out. The collision comes at a particularly busy time, with many people travelling during their lunch breaks and afternoon business appointments likely to be affected.
Those who must use the route should approach with patience and caution, maintaining safe distances and being prepared for sudden stops as traffic navigates the lane closure.
